This repository is a curated collection of over 300 terminal color schemes (themes) and a comprehensive conversion toolchain that transforms a single source of truth (YAML + iTerm2 plist files) into configuration files for more than 20 terminal emulators, including Alacritty, Kitty, Windows Terminal, Xresources, Konsole, and many others. The core converter `tools/gen.py` reads source color data, applies WCAG contrast adjustments, and uses Jinja2 templates to generate output files. The repository also includes a terminal-based theme previewer, automated screenshot generation, and WCAG accessibility checks. It is a hybrid project: primarily a data collection with an ETL pipeline for multi-format export, but also contains application-level tools for preview and quality assurance. The codebase is well-organized, with reusable color science utilities (sRGB/P3 conversion, luminance, contrast ratio) and a template-driven generation architecture that can be adapted for other multi-format rendering tasks.
This is a production-grade single-page web application for picking and converting colors in the OKLCH and LCH color spaces. It provides interactive 2D charts (WebGL2-accelerated), sliders, numeric inputs, and a 3D gamut model (three.js) to explore and select colors. The app supports sRGB, Display P3, and Rec.2020 gamuts, and can parse and output a wide variety of color formats (hex, rgb, hsl, oklch, lch, lab, linear RGB, Figma P3 hex, etc.). State management is handled by nanostores with persistent settings in localStorage, and the URL hash is used for shareable color states. The codebase is well-structured with clear separation between core color logic (lib/), reactive stores (stores/), and UI components (view/). It includes a comprehensive test suite and CI/CD pipelines for deployment to Firebase Hosting. The architecture is a monolith frontend with no backend, built with Vite, TypeScript, PostCSS, and Pug templates.
This is a sophisticated web-based color picker application built with React, TypeScript, and Vite. It supports multiple color models (HSL, HSV, HWB, RGB, HEX, and OKLCH) with real-time updates, wide gamut support via OKLCH/P3, and advanced color handling features. The application features a clean architecture with Zustand for state management, specialized utilities for color conversion and parsing, and innovative UI techniques like CSS variable-based gradients for performance and hue preservation logic to prevent unwanted shifts during adjustments. Key strengths include cross-format pasting support, URL-based state sharing, and touch-optimized interactions.
Rainbow is a zero-runtime-dependency Swift library that applies ANSI escape sequences to strings for colored terminal output. It supports the named 16-color palette plus light variants, 8-bit 256-color mode (38;5;N), 24-bit true color (38;2;R;G;B), hex colors approximated to the nearest 256-color cube, HSL colors converted to RGB, and styles (bold, dim, italic, underline, blink, swap, strikethrough). Output is gated by OutputTarget detection that checks isatty() on POSIX/Windows plus NO_COLOR/FORCE_COLOR environment variables, so redirected output degrades to plain text automatically.
The GoPro CineForm SDK is a production-grade, wavelet-based video codec library (SMPTE VC-5 super-set) implementing the full CineForm compression pipeline: recursive spatial/temporal wavelet transforms, quantization with rate control, run-length + Huffman entropy coding, and tag/value bitstream framing. It exposes a layered architecture: a C core codec engine (Codec/), high-level EncoderSDK (with asynchronous encoder pools) and DecoderSDK (with thumbnail fast-paths and output format negotiation), plus supporting libraries for color space conversion and scaling (ConvertLib/), geometric mesh warping for GoPro lens correction (WarpLib/), and an Active Metadata engine handling 3D LUTs, CDL color corrections, and timecode. Both encoder and decoder C APIs (CFHD_OpenEncoder/CFHD_EncodeSample, CFHD_OpenDecoder/CFHD_DecodeSample) are the primary integration points, with TestCFHD and WaveletDemo as example tools. The codec is cross-platform (Windows, macOS, Linux) and built with CMake, with a GitHub Actions CI workflow. The codebase is mature and battle-tested in commercial video production, with heavy SIMD (MMX/SSE2) hand-optimization in the wavelet and color conversion paths. However, it carries significant technical debt: large monolithic translation units (e.g., ImageScaler.cpp, DemoasicFrames.cpp with thousands of lines), extensive #ifdef platform conditionals, large blocks of disabled #if 0 code, hardcoded debug paths, and dated SIMD (Pentium 3 MMX) that underutilizes modern AVX-512 hardware. Several latent bugs exist (e.g., a copy-paste index error in ScaleB64ARow), and the FSM/Huffman entropy tables (Common/table17.inc, table18.inc) are checked-in generated artifacts that may silently drift from their generator. Overall it is a strong, working codec with cleanly separable infrastructure components, but the surrounding code style shows its commercial origins and accumulated debt.