> ## Documentation Index > Fetch the complete documentation index at: https://comfytv.org/llms.txt > Use this file to discover all available pages before exploring further. # Color Suppress > Knock down any of six primary/secondary colors independently — a targeted spill and tint remover. Color Suppress ## What this node does Color Suppress reduces the presence of specific hues in your footage. You get a slider for each of six colors — red, green, blue, cyan, magenta, yellow — and each one dials how much of that color is suppressed. It's a more general cousin of Despill: instead of only cleaning a green/blue screen, you can pull down any color cast, and optionally keep overall brightness intact while doing it. Input and output are `COMFYTV_VIDEO`. It runs as a live fx-preview filter (emits an fx spec and passes through), so results preview without a full render. If all six sliders are 0, it passes the clip through unchanged. ## When to use it * A color cast (e.g. a magenta light leak, a too-blue sky) needs to come down. * You want to suppress green/blue spill but also clean a second unwanted hue. * You need a subtle grade correction targeted at one or two colors. ## Parameters ### red / green / blue / cyan / magenta / yellow One suppression amount per color. Each ranges `0.0`–`1.0`, default `0.0` (no change). Raise a slider to remove more of that color. Any combination works; leaving all at 0 is a pass-through. ### preserve\_luma When on, keeps each pixel's brightness constant while suppressing color, so the image doesn't darken where color is removed. Default off. ### output `image` (default) returns the color-corrected footage; `matte` returns a grayscale matte derived from the suppression. ## Outputs | Output | Type | Meaning | | --------- | --------------- | ---------------------------------------------------------- | | **video** | `COMFYTV_VIDEO` | The suppressed image, or a matte when `output` is `matte`. | ## Tips * Turn on `preserve_luma` when suppressing a strong color so shapes and detail don't go muddy. * For dedicated green/blue screen fringe, **Despill** is purpose-built; use Color Suppress when the unwanted color isn't the screen. * To interoperate with native ComfyUI nodes, insert a **Bridge**. See [bridges.md](https://github.com/jtydhr88/ComfyTV/blob/main/docs/bridges.md). ## Related nodes * **Despill** — dedicated green/blue screen spill removal. * **Keyer** / **Select0r** — produce mattes from color that Color Suppress can complement.