Tinker,
The main concern I have is making it a sufficiently distinctive color that it won't be confused with my 12ga ammo. I only load Federal papers which are red. But I buy Federal plastic ammo which is maroon and Rem which is black or STS green or gold. Yellow is for 20ga, I think all here will agree not to make them yellow. That's all I have for the debate on color. Pink with purple polkadots is o.k. with me after that, in fact, prefereable. One last thing, I think they should be marked "16" somewhere boldly.