Hmmm I'm starting to wonder if the smaller one is a cross with a green sev. It has the blue face and the peach speckles but since settling in has turned almost dark green also. The guy did have at least one green in the tank too so it is very possible, just strange how occasionally it looks all the right colours that it should if it were a true atabapo
See how it matures, mine can change colours so quickly it really is like on and off one second it will just be in kind of chilled out colours then the red will pick out and olive go pale then then back to calm - thats when hes trying to get my attention. He has a dark colouration which is a little bluey actually when he is upset - then he has battle markings which are facial stripes and stress bars full out this is when he is staking out his territory.
Sat and watched the tank for a while... appears that it is stress colouring and that it is in direct competition for all the favourite spots that the Krobia like to claim Seems there's quite a squabble going on