part of my balls belly is really pink

[takagari]

I just put him on news paper for the first time. and the little poop dumped his dish right after i left him alone and spent the night in a soaked tub lol

Anyway I picked him up and the bottom 10 inches of his belley was a dark pink.

I noticed pink coloring to the water i drained out of it so I figure there must of been a colored ad somewhere on the paper i put in there.. I hope

Could this be something else? If it was for the tinge to the water i would be more worried

Any advice would be nice. thanks guys!