So I did this test 4 days ago, when I read it within 5 minutes there was a faint line but vvf. I've looked again today and it was a greyish colour in my opinion, but a few websites have said that if you invert an evap line it doesn't show green. This is the test invert. I know I can't depict this as an actual result as it's outside the time frame but just wondering your opinions