black beard an issue?

[Juicebox]

just noticed today when lookin at my betta that his beard seems very black,hes a red bettta with some blue in the tail,i never noticed the black before,i only have him about 10 days,since i got him the blue has gotten brighter and more blue has appeared on his tail,is this black just the same thing or is it something i should be concerned about??

id appreciate any replies :)

[shellieca]

Sometimes when they get into a bigger tank with heat & get settled in their colors will darken or change. My males both darkened considerably when moved into their individual 10g tanks. The one male has gone from a pale pink, purple, green, blue to a darker pink, purplish, green, blue, with more burgundy on his head. He looks so different than before. My girls darkened as well once they got settled in to the bigger tank.