i have heard two different explination about stress cocloration for a panther. one was that the sleeping color is stress free and the less stress for the chameleon the color his at rest color will be to his sleeping color.well i have an ambilobe and his sleeping colors are just as bright as his fired up colors. his regular colors are a green with w greenish blue strip. when hhe is fired up his bars turn sky blue with the yellow on his body. my question is when he not basking in his cage he is a "darker" (not extremly dark)dull color. does this mean stress?? or is it normal??