i have a 6 month old cranwells horned frog, normally he is a pale green colouring with orange tints plus brown spots, however when i got up and checked on him this morning he has become almost silver and looks a bit dry. last night the air temp was quite cold although the tank temp should have been relatively stable, i dont know if that would have such an effect or not. is this normal or should i be concerned? his behaviour seems normal. any comments and advice appreciated