I think the colors need to be in a way where one goon will always be safe, but neither team knows which goon is safe.
As it is right now any 2 cops together can get a guilty on all the goons. I think it is just a slight tweak that would help balance this. Or reducing the VT count. 10:3 is a fairly standard split for regular day/nights, but in this setup scum have only half the number of nightkills.