This tool in particular is not well-suited for video, since it's too imprecise and too complex at the same time. However, the general idea of getting better co

This tool in particular is not well-suited for video, since it's too imprecise and too complex at the same time. However, the general idea of getting better color from luma channel has been tried in Daala: https://people.xiph.org/~xiphmont/demo/daala/demo4.shtml https://people.xiph.org/~xiphmont/demo/daala/demo4.shtml and a form of that has been added to the AV1 codec.