caniuse.com reports whether something is too buggy to the point of being unusable in a different color, and has footnotes for whether something has some quirks/caveats but is otherwise usable
That’s true up to a point, but caniuse and I sometimes have different interpretations of what is too buggy to be usable. Rasterising vector formats and working with colour seem to be two common triggers for poor rendering, with extra chances for visible glitches if they are used in combination and a bonus if animation is involved as well.