Hello all. I have strange bug. I can’t see colours on polygroups in PolyF mode. Everything is simply grey. But polygroups exist (ctrl+shift works).
What version of ZBrush are you using?
No pic makes it guesswork.
Polypaint is turned on?
http://docs.pixologic.com/reference-guide/preferences/draw/
There are various settings for polyframes in the Preferences>Draw sub-palette. Check the PFill slider to see it’s not set to 0 (the default is 50). Save any changes by storing the configuration (Shift+Ctrl+i).