# Color Grade AI — style skill for color grading & LUTs

> **For AI agents:** find the right skill in one call — `curl -s "https://skills.varg.ai/api/search?q=<what the person wants>"` returns the matching use case and the best skills with install commands, as markdown (Russian works too). Full index: https://skills.varg.ai/llms.txt. Every page has a markdown twin: add `.md` to its path. Before generating anything, show the person the options on the use-case page.

Measures a frame or clip and writes .cube 3D LUTs for DaVinci Resolve and Premiere: fixes, shot matching, presets.

- **Type:** [Style](https://skills.varg.ai/styles.md) · [Color grading & LUTs](https://skills.varg.ai/browse/skills/color.md)
- **Slug:** `color-grade-ai`
- **Status:** beta
- **Publisher:** Isaac Rowntree (community)
- **License:** MIT
- **Source:** https://github.com/isaacrowntree/color-grade-ai
- **Works in:** Claude Code
- **Requires:** Python 3, Ruby, ffmpeg and ffprobe
- **Cost:** Free — local
- **Adoption:** 30 GitHub stars (GitHub, 2026-10-26)

## What it does

Generates .cube 3D LUTs for color correction by measurement rather than by eye: it analyses a frame or a whole clip, detects log versus display-referred Rec.709 footage, fits a correction and emits a ready-to-use LUT, matches one shot to another, and reports color statistics for a region such as skin or a wall. It ships correction LUTs and node-chain building blocks that bake into creative presets, a config-driven preset file, an in-browser preview for live grading, ffmpeg recipes for H.265 masters and web exports, and DaVinci Resolve node-order guidance. Small project (30 stars), so it stays in beta.

## Use when

- Fix a color cast or exposure problem with a LUT
- Match one shot's grade to another
- Build a reusable look as a .cube file

## Not for

- Grading inside an editor's timeline (it outputs LUTs you apply yourself)

## Install

- Claude Code: `git clone https://github.com/isaacrowntree/color-grade-ai.git ~/.claude/skills/color-grade`

## Used for

- [B-roll for your video](https://skills.varg.ai/use-cases/b-roll.md): Cutaway footage for every mention in a voiceover or interview: generated clips, collage or stock-style shots, cut in on time.
- [Change something inside a video](https://skills.varg.ai/use-cases/video-edit-ai.md): Swap a product, restyle a scene, change lighting or the look of an existing clip while keeping the motion.

## More color grading & LUTs skills

- [Theme Factory](https://skills.varg.ai/skills/anthropic-theme-factory.md): Restyle slides, docs and pages with one of 10 matched color-and-font themes, or generate a new one.
- [FLUX 3 Archival Formats](https://skills.varg.ai/skills/flux-3-archival-formats.md): Give FLUX 3 video a period look by naming the recording format and its artifacts, not a mood.

## Run the generation on varg

varg is one API key for the models these skills drive — Seedance 2.5, Kling 4, Veo 3.1, Wan 3, Nano Banana 2.1, GPT Image 2.5, ElevenLabs v4 and 200+ more — billed in credits, with a cost estimate before anything runs.

- Claude Code: `claude plugin marketplace add vargHQ/skills && claude plugin install varg@varg` (skill + hosted MCP)
- Codex, Cursor, Gemini CLI, OpenClaw: `npx skills add vargHQ/skills --skill varg-ai -a <agent> -y`
- Claude.ai, ChatGPT, any MCP client: connect `https://mcp.varg.ai/mcp`
- API key: https://varg.ai/dashboard/api · Model specs: https://varg.ai/models/llms.txt