sollux's lips look a little grey there, but i guess that's just how the panel was drawn. i myself am a little iffy on the INK BLACK lips thing, even though its pretty much totally canon,, i guess its just because, in art and cosplay (maybe for drawing, it depends on the art style?), grey lips look better than black lips. but i mean, just a thought

I put the Sollux one there to show that guys aren’t drawn with black lips in every panel.