One of my Red eye tree frogs keeps going shades of blue. iv heard something of this kind of thing before. any answers?

personally i have no idea. i thoguht they quite often were blue. maybe some pictures would help you get a response(?)

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1:0:0 cats
1:0:1 crayfish
0:0:8 slugs
0:0:0 lizards

i cant put pictures up yet, but, the private breeder i got them from said something about if they turn blue they are another species or something!?

hw only does it now and again, its not the temp because the other four are just fine.

Also, any tips on breeding? i have broad leaves overhanging water everywhere, and they have been calling for months. one of the males has been 'piggybacking' a female and had been for three days, but she kicked him off, and no eggs!