for myself, I find it easier to have multiple colors. That way I can tell them apart. I cycle breed where I introduce a female into the males cage for impregnation. I can control how many litters per week I have. With different color females, I can have several in a cage and still know the black hooded was bred three weeks ago and time to pull her out. Usually quite obvious but more important for the female that decides to quit being productive. I know who she is, can pull her and feed her off so as to NOT waste any more time/space/food on her!
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Thanks,
Dave Colling

www.rainbows-r-us-reptiles.com
0.1 Wife (WC and still very fiesty)
0.2 kids (CBB, a big part of our selective breeding program)
LOL, to many snakes to list, last count:
19.29 BRB
13.18 BCI
And those are only the breeders 
lots.lots.lots feeder mice and rats 