It'll depend on the basses mood, their colours will go darker/lighter due to their mood and surroundings. How long have you had it? If not that long it'll need some time to adjust to new tank and once it feels comfortable it's colours should pop
And also I've had these fish for about 7 months and their color has never quite "popped" even though my water parameters are fine and there really is nothing stressing them out. But I tell you their appetite is like none other