Melting Pot need the right lighting in order for it to get its colors. If the chalice is happy it will grow at a decent rate and color up. It took me two year before mine even started to grow and have it multi color back again.
Melting Pot grows very slow when it a small frag but once it get to the size of a quarter and it like it surrounding it will take off fast.
Thanks Ktar for your great info.