I have owned a few and currently have one that I grew from like 6" to 10" or so now. Question is sometimes you see a flower that has a black background and bright floral designs over it and othertimes they are more pale. Size doesnt always seem to matter..cause I recently saw one at 6" that had a jet black background... I will say I have seen more black based ones as adults... Mine is a bit pale but its weird cause while I am doing a water change it darkens up... Is it location of collection? Diet? They just need time?