Reading after time frame

So I know after a certain amount of time the test is invalid and shouldn't be read. I fully intend on retesting in a couple days and already have an appointment for my annual with my gynecologist on Thursday.

But I took a test this morning and at the two minute mark there was no visible line so I set it in the trash next to the toilet. 8 hours later a took a look at it sitting at the top of the bin and saw a faded, jagged blue line. I know indents usually appear after the test dries but do indents/Evaps usually have a color to them?

*again, I'm already going to retest and know the test is considered invalid*

My main question isnt if this test is positive but if evaps/indents have color to them?

Sorry for the pee droplet on the test 😳