I really like this tweak. Everything that gives us more screen space is welcomed change. Just one minor annoyance, which might be ubuntu's gtk theme problem, I see now is that there is no obvious "None" label at the top of list. It is there but appears as a few pixels high unmarked region you need to click at to remove marker.

One other idea:

Is it complicated to auto-select color profile in CMS combo-box of Fill/Stroke tab if there is only one assigned to a working document? Don't know if there is something I've overlooked in this approach though. Maybe others will have something to add...

Regards,

Vlada