We got our original frag of this from Rommel of Ultimatefrags.com. We have been growing it out for about 5 or 6 months now. It has only gotten brighter from the very beginning. We don't know if it will color up even more but it probably will. One thing we can't explain is the grey patch in the middle of our colony. It looks like that might be part of the normal coloration of this watermelon chalice. It's very interesting.