Settings UI component

tweakcn is a web UI styling tool and frontend design editor used for client-side theme customization. It functions as a style injector that applies dynamic theme overrides by inserting style rules into the document head at runtime. The project provides a visual interface for adjusting user interface components and design settings through built-in presets and custom CSS values. It utilizes JSON-driven configuration and preset mapping to manage application appearance and brand identity without the need to manually edit stylesheet files. The tool enables visual design management and rapid itera

Theme-ui is a React theme framework and CSS-in-JS utility used for building themeable user interfaces. It functions as a design system tool that establishes centralized, constraint-based scales for colors, typography, and spacing to ensure visual consistency across applications. The framework distinguishes itself through an array-based responsive shorthand for mobile-first layouts and a dedicated color mode manager that synchronizes with browser preferences and persists user selections. It also features a system for creating named style variants to control component appearance via properties