I tend to agree with you here Mark.
In my opinion a full Cups and Balls routine already has a danger of becoming confusing as there is alot (especially by close-up standards) going on. This is why i mentioned on the first page of this thread that having the balls changing colour throughout the routine may actually add to this confusion. The simpler and easier to follow (from the spectators perspective) the better.
It also begs the question of wether adding additional effects to a routine makes it any better. As we know the Cups already demonstrate many of the effects possible in conjuring. Is adding more, a colour change, levitation, animation, actually improving the overall effect ? Or simply adding unwanted chaff ?
Im not saying it cant be done, just that its too easy to do it badly. Although, i havent seen the OPs routine so cant comment on it specifacally - for all I know, it could be exellent
jim