It depends in my opinion. Black definitely frames the tank which looks like a distraction. But depending on the furniture it's sitting on can work aesthetically. Rimless, forget it, doesn't look right. Also, as the edge wears on the black it stands out like a sore thumb.
I elected to go clear on my tank and have never had algae issues on previous tanks. Low nutrients always solves that problem.
If you have a tank setup with clear silicone now, get some black construction paper and tape the corners to mimic what it would like if it were black silicone. That's what I did. Made my decision very easy.