Positive test?

I have a quick question. I tested myself this morning with a Telano pregnancy test. Within the specified time, a faint line appeared, but it's weirdly colored (the edges of the line are colored, so not completely). Should I consider this positive? I did use an early test, though. 4 days before my expected period. I thought if the second line shows any color, it's definitely positive. Or did I use too much urine?