Very well drawn and that denim looks awesome. All power to the workers! RGB slider support works correctly. Its top part is REALLY good going for a vanilla and breast-size slider compatible mod with detail though, I gather. Thank you, Iago!
There are a few glitches however: on import, the mod resets the body size slider (but being over-everythings, the workaround is to use Custom Save Data, which is simpler than other workarounds for this glitch). The top part isn't compatible with every boob size, and there are fairly significant gaps at all ranges which don't look so good. The top part doesn't join up to the bottom so well when larger boob physics forces get into play; you'll want a zoomed-in view for some characters.
On a very minor and probably unavoidable glitch: the top picks up the top RGBA alpha slider, but the bottoms RGB red/green/blue.