Please undo ```text-styling``` changes (especially ```diff```)

All of my bots rely on text-coloring using ```diff``` and ```yaml``` to make chat easier to read.  The new change on ```diff``` from soft pastels to fat ol' Christmas-themed highlights is terrible.  The colors look awful in chat, and because of the low contrast and sharp colors it both strains my eyes and makes it difficult to read.  The exact opposite of the soft, clearly visible color scheme of the discord ui.  The ```yaml``` changes weren't nearly as bad, although I miss the clear cyan; the new baby-blue color is just a little harder to read, and I think doesn't look half as good.  

Cheers folks.