Indent test!

So I heard that if your test is a day or so old and the indent is pink it’s a good sign? I’m not sure how true that is, I got a VVFL on this test and I kept it to see if it’s pink after a day or so old and the line looks VERY much pink inperson I’m not sure if you can tell through picture or not but is that true? Or is it completely invalid and the indent shows up pink after a day or so anyways?