Seriously, is this possible?!

Sarah
This picture does not do it justice, but that vertical line is BLUE. However, it's not a full line. I took this test on Thursday morning with FMU and picked it up today to find a slight BLUE line. After reading this article about pregnancy tests, I'm freaking out to whether or not this is an actual positive! 
http://www.madeformums.com/forum/pregnancy/confusing-pregnancy-test-result-help/160517.html 
this is the article explaining how these pregnancy test only show COLOR when HCG is present.