All panther males start out tanish and work their way up towards their adult colors. It is nearly impossible to determine what the final colors of a panther male will be when they are this young (especially if he is a cross) but he definitely will get his rich, saturated colors starting at about 6 months of age and getting better from then on.
Edit -
Just to illustrate this, here are two separate panther males at 2-3 months and again at 12 months old. Daedalus is on the left, Cerberus on the right.