Blend modes

I'd like to see more blend modes - color Filters.

With multiple options for each: they could be limited to work within just 1 group, 2 groups, ... all + BG (that would mean, I assume, that Kustom has to render what's below the Filter and then blend that with it).
Their limit could be also defined with si(mindex).
Right now the blend mode works to the root of the komponent or the first group. I'd like to control that and make it go through all, or stop inside individual groups.