In May of 2003 we bought 200 CH females. Many still in shed and had not eaten. So I do not think it was because they were use to a darker color prey it in the wild. Could they smell differently, maybe? But we get 500 rats per week and only 50 or less are NOT Albino rats. So they are mixed up with the Albinos rats pretty well. They should smell the same.
Here is the story. I grab some trays of rats and begin to drop them in the rack with female balls. Later I come back to find 40 or so did not eat. Good ratio right? Well not in color of rats that I have to take out, it is about 20 NON-Albino rats and 20 Albino rats. Week after week I see this after first realizing it. Remember we only get about 20 NON Albino rats per 200 and for the first 4 months they got both rats and mice(Albino). So I did not realize this until months later after we sold about 100 and the numbers were smaller and easily viewed. I still got a great percentage of the NON-Albino rats out of racks after feeding.
I sold 20 of these females to 1 customer and he was pleasantly surprised at their size given how old they were. I told him they were on rats 3-4 every 2 weeks. Well, he gets them and tries feeding them. Nothing! Not one eats! I speak to him and he tells me this. I said "what are you trying to feed them"? He said "rats." I said "what color rats?" He said "hooded rats" meaning colored rats, "why?" he asked. I told him the story and he said that he bred Albino mice and hooded rats and that he would find some Albino rats and try them. Well, I have not heard back from this customer with this complaint about the females not eating. Go figure. Could it be that ball pythons(snakes) can see color? I do not know, but sure looks like it to me.