Colored solar panels that mimic tiles roof hit 95% efficiency compared to regular solar tiles
(interestingengineering.com)
Edit: didn't knew OP added the "compared to regular panels part". Disregard the rest of this comment.
I think is a good title, it's tells how compare against regular solar panels. Saying their absolute efficiency wouldn't really tell a lot because not everyone knows what means having a 20% efficiency.