This effect removes all color information for all colors except the selected one.
This effect has keyframes.
Similarity - Similarity percentage with the selected color. 0.01 matches only the exact key color, 1.0 matches everything.
Blend - Blend percentage. 0.0 makes pixels either fully grey, or not grey at all. Higher values result in more preserved color
For YUV color - Select this if the clip has YUV data instead of RGB
This effect is not as effective and easy to apply as the Chroma Keep effect.