Low contrast on dark banners
Some banners still have low contrast, because the extracted colors are quite dark:
We could tweak the color algorithm to account for this better, add an "inverted" mode with light text and arrows, or maybe both?
I'd also use a semi-transparent black (white in the inverted case) instead of the default text color, because that has a tint and therefore clashes a bit with some background colors (e.g. see the Clapper one).