Evap? So confused.

Samantha
I've NEVER had a test do this to me, so idk what to think. I'm 13dpo. Took this test and it was BFN. I threw it into my trash can and when I went to throw something else away about an hour later I saw it sitting on top and it looked like this. All other tests that I've taken (same brand) have evaps after a while, but they are completely gray. This one is thin, but has some serious color. Talk about playing with my mind! Ughhhh, has anyone else gone through this? And what was the outcome?