Is this normal for BP urine?

[Orianna]

Thanks!
You guys are so helpful!
And because I don't want to take up another thread, I was wondering if anyone could tell me if this is off:

I noticed the tip of her bottom lip was a little darker today. It's hard to see in the picture because of the flash (and I totally didn't mean to flash my snake. I didn't check my camera's setting before hand). It's the slightly dark area at the tip of her mouth. It's slightly pink greyish?
She's acting just fine, still slithering around doing her thing, and she's got normal tongue flicks.
She does like to explore her cage a lot, so maybe it's a little raw from constant rubbing?