Open-source alternatives to Spacegray

Ayu is a collection of color themes for the VS Code editor. It provides a set of visual interface themes designed to customize the editor's background, foreground, and UI accents. The project features three distinct color schemes: light, dark, and mirage. These variants allow for adaptive switching between different lighting environments to maintain visual comfort. The theme covers syntax highlighting for code elements, interface customization for panels and titlebars, and typography overrides. It also includes a companion library of custom file icons to improve file type recognition and nav

Firefox-UI-Fix is a collection of CSS stylesheets, style overrides, and a UserChrome framework designed to redefine the layout and appearance of the Firefox web browser. It functions as a browser interface customizer and styling kit that uses CSS injection and DOM overrides to modify the browser shell. The project distinguishes itself by providing deep integration with host operating systems, allowing the browser's window decorations, menus, and themes to match system accent colors and native desktop aesthetics. It includes specialized capabilities for modifying the visual hierarchy of the in

soda-theme is a set of visual interface skins for Sublime Text that provides both dark and light modes. It serves as a customizable color scheme and UI theme for the text editor. The project is optimized for high resolution screens, utilizing high-DPI compatible interface elements to ensure that text and icons remain sharp. The theme allows for the customization of UI appearance and styles, including the modification of tab shapes, folder icons, and color schemes through configuration files.

This project is a cross-editor theme library and mapper that provides a curated collection of syntax highlighting color schemes. It uses a JSON theme specification to define visual roles and color palettes as immutable data structures, ensuring these definitions remain consistent across different software output targets. The system functions as a declarative style generator, translating abstract color definitions into the specific configuration formats required by various programming environments. By using a template-based approach, it maps a single source of truth for color definitions to mu

kanagawa.nvim is a Lua-based colorscheme for NeoVim that provides a high-contrast visual theme based on a traditional Japanese art color palette. It functions as a comprehensive styling system for the editor, applying semantic syntax highlighting to code structures and plugins. The project features a system for switching between different lighting variants, such as warm, deep dark, and light modes. It includes utilities for customizing specific palette colors and highlight groups, as well as the ability to export color definitions to external terminal emulators and shells for cross-applicatio

Tomorrow Theme

Chameleon is a color framework for Swift and Objective-C applications, providing a toolkit for managing dynamic palettes, gradient libraries, and hexadecimal conversions. It functions as a system for creating harmonious color schemes and calculating contrasting text colors based on background luminance. The project includes an image color extractor that analyzes images to generate matching color schemes or calculate average colors for user interfaces. It also features a gradient color library for creating and applying smooth transitions to backgrounds and text elements. The framework covers

This project is a visual customization theme for the Visual Studio Code editor, designed to improve code readability and developer comfort. It provides a collection of high-contrast color schemes and aesthetic configurations that adjust the appearance of the editor interface and syntax highlighting to support extended coding sessions. The theme focuses on reducing visual fatigue by optimizing color palettes and contrast levels for both low-light and high-brightness environments. It includes specific workbench overrides that define clear visual boundaries between the editor and sidebar areas,

This project is a Vim colorscheme and theme framework that implements the Solarized color palette. It is designed as a precision-engineered set of low-contrast colors to reduce visual fatigue and provide a consistent reading experience within the Vim text editor. The system includes a terminal color adapter that adjusts highlight groups and color mapping based on the specific capabilities of the terminal emulator. It further supports dynamic theme switching, allowing users to swap between light and dark background modes. The framework provides capabilities for UI customization, including the

Dracula Theme is a universal dark color palette and cross-platform theme specification. It provides a standardized set of high-contrast colors designed to implement a unified dark aesthetic across various text editors and terminals. The project is an accessible color scheme that maintains a minimum 4.5:1 contrast ratio to meet global visual accessibility standards. It ensures a cohesive visual experience by synchronizing these colors across different operating systems and developer environments. The system utilizes a centralized color palette and static definitions to maintain consistency. I

This project is a collection of visual styles, layout variants, and color schemes for the Polybar status bar on Linux. It functions as a UI style coordinator that provides customizable status bar presets to modify the look and feel of a desktop environment. The system includes a dynamic color generator that creates matching color palettes based on wallpaper assets or random selections. This ensures visual consistency by synchronizing the colors of the status bar and application launchers with the desktop background. The project manages Linux desktop theming through the application of diverse

This project is a JetBrains IDE theme plugin and color scheme pack that implements a Material Design UI theme. It provides a comprehensive interface overhaul that replaces standard editor colors and icons with Material Design aesthetics. The plugin focuses on developer workspace personalization by allowing users to apply a consistent visual language to JetBrains development environments. It enables the customization of the IDE appearance through a collection of customizable palettes for code highlighting and user interface elements.

This project is a minimalist visual theme and customizable CSS framework for Obsidian. It functions as a markdown layout engine and an adaptive user interface designed to remove interface clutter and create a distraction-free writing environment. The theme distinguishes itself through layout transformations that convert standard markdown tables and lists into card-based grids and visual galleries. It provides a system for transforming structured data into scannable visual representations and organizes consecutive images into column-based grids. The framework covers comprehensive interface ae

Chameleon is a color framework for Swift and Objective-C applications. It provides systems for programmatic color palette generation, global theme orchestration, hexadecimal conversion, and the extraction of visual data from images. The library includes a dynamic theme engine for applying global visual styles and luminance adjustments across an interface. It features a palette generator for creating analogous, complementary, and triadic color schemes based on a seed color, and an image color extractor to derive average colors or palettes from images. The framework covers a range of color man

Nebular is an Angular UI component library that implements the Eva Design System, providing a comprehensive set of over thirty-five ready-made UI elements with full theming support. The library is built around a design-token-driven architecture where visual properties are compiled into CSS custom properties, enabling global style overrides and consistent branding across applications without modifying component internals. The framework includes a built-in dark mode system activated by toggling a CSS class on the root element, which triggers pre-defined token overrides across all components. Au

YASB is a customizable status bar framework and desktop shell component for Windows. It provides a toolkit for building personalized information bars using a modular class-based widget architecture and CSS-based styling. The framework distinguishes itself through deep integration with Windows tiling window managers, allowing users to display active workspaces, tiling layouts, and window focus states. It also features automated visual consistency by generating system color schemes based on the current desktop wallpaper. The project covers a wide range of capabilities, including real-time syst

The United States Web Design System is a government design system and accessible UI framework. It provides a collection of standardized CSS and JavaScript components, along with a CSS component library, specifically designed for building consistent federal government websites. The system allows for custom CSS theme development through the use of design tokens for colors, spacing, and typography. Users can customize visual themes and compile custom styles to maintain a unified brand identity across multiple web properties. The framework covers responsive interface design and web accessibility

mdui is a framework-agnostic UI library and design system based on Material Design 3 standards. It provides a comprehensive set of reusable interface elements implemented as native Web Components, ensuring compatibility across different JavaScript frameworks. The library features a sophisticated theming system that supports light and dark modes, as well as the ability to generate dynamic color palettes from seed colors or image sources. It distinguishes itself with a high level of flexibility in visual customization, using CSS custom properties to control design tokens such as typography, cor

Lektor is a Python-based static site generator and flat-file content management system. It transforms raw content and data models into static HTML pages, storing all website data in a hierarchical file system rather than a relational database. The system operates as a model-driven CMS, utilizing blueprints and schemas to control data capture and validation. It provides a browser-based administrative interface that allows users to visually edit and organize site content without modifying source code directly. The platform manages the full site lifecycle, covering static site generation, multi

Kvaesitso is a search-centric Android launcher that replaces the traditional home screen with a unified search interface for launching apps, searching files, and performing quick actions. Its core identity is built around a search-first model that indexes apps, contacts, files, and external services, supported by a Material Design 3 theming system with custom color palettes and monochrome icon filters for a personalized appearance. The launcher distinguishes itself through an extensible plugin system that adds new data providers for weather, file search, cloud storage, public transport, and t

Solarized is a unified color system and precision color scheme designed for terminal emulators, code editors, and GUI applications. It provides a standardized sixteen-color palette with specific hue and lightness relationships to ensure visual consistency and maximum readability across different software interfaces. The system utilizes dual-mode contrast mapping to pair light and dark variants of every color, preserving perceived contrast and readability when switching between background themes. It employs fixed-lightness value constraints and hue-based palette generation to maintain uniform

This is a grammar of graphics visualization library used to build charts by mapping tabular data to visual marks. It functions as an SVG data visualization tool and an exploratory data analysis API, allowing users to render complex visualizations and geographic maps. The library features a GeoJSON map renderer that projects spherical coordinates into two-dimensional pixel space and an Apache Arrow visualization interface for high-efficiency data processing. Its capability surface covers data transformation through binning and grouping, visual encoding via automatic scale inference and color

goyo.vim is a distraction-free writing plugin for Vim that centers text and hides user interface elements to create a focused editing environment. It functions as an interface customizer and workspace manager, allowing users to minimize visual noise during long-form writing. The project provides tools for configuring the dimensions of the writing area using absolute values or percentages. It automates the transition between standard editing and focused modes by toggling specific settings and disabling interface elements such as status lines, sign columns, and git gutters. The plugin includes

Nord is a color palette design system and standardized color reference providing curated blue-toned palettes for user interfaces, design software, and environment themes. It defines a UI color scheme consisting of dimmed pastel palettes intended for flat, minimalist aesthetics. The system functions as a cross-platform theme specification to unify the appearance of code editors, shell terminals, and operating system environments. It includes importable color swatches compatible with native formats for use in professional design tools. The project covers cross-application visual standardizatio

tokyonight.nvim is a Lua-based Neovim plugin that provides a collection of dark and light color schemes and UI themes. It defines color palettes and highlight group configurations to manage syntax highlighting and the overall visual aesthetic of the editor. The project enables the export of terminal color palettes to maintain a unified visual style across terminal emulators and other system applications. It also includes mechanisms to match the visual style of third-party extensions to the primary theme for workspace consistency. Users can refine the visual appearance through color palette c

React95 is a React UI component library and themed framework designed to emulate the aesthetic of a nineties desktop operating system. It provides a collection of reusable interface elements that allow developers to build web applications with a nostalgic visual style. The library functions as a design system centered on a Windows 95 theme. It utilizes a centralized theme provider to manage global color palettes and styling across the application. The framework covers retro UI development through a set of pre-styled components and themed interface design tools. These capabilities enable the

zimfw is a Zsh configuration framework and plugin manager designed to customize and optimize the Zsh shell environment. It functions as a system for installing, updating, and pinning shell extensions and themes from remote or local repositories. The framework focuses on shell performance by using byte-code compilation of scripts to reduce startup time and improve execution speed. It employs a declarative configuration model for module management, allowing for version-pinned dependency resolution and the ability to fetch modules without full git clones to accelerate installation. The project