well i had my cham in big cage 6'x3'x3' he was doing well in there eating/drinking and had really good colors never saw him dark. but since I changed him to a smaller cage, he have been like dark all the time, the cage hes in now is 25"x25"x50" and has a smaller screen(plastic coated). hes been on the floor and on the screen alot. should i switch him back to the old cage? both cages are very well planted.