Tail turns black?

[bigcahoonas10]

When I take my beardie out of the cage and let him crawl on me, his tale turns black while his stomach marks go away. Whats up with that?

 

[FATBOYDADRAGON]

could be camoflague
My beardie stays dark colors inside his enclosure .most everthing in enclosure is dark.
When i give him bath in light color sterilite tub he turns light almost cream colored
on this tail .
Don't think it is anything to worry about