pack colors, the 3.1 rule question

I'm fairly sure pack managers were asked, when dark mode was rolled out, to pick a different, readable link color for dark mode. (Actually I'm positive, bc I had to do it for BFW 2.0. Our color was indigo on light mode and pale green on dark mode.) Packs show up differently (if they've chosen an alternate color) on dark mode. So I feel like it would be doable to use one color for light and one color for dark.