Comment by ForkMeOnTinder

I had the opposite thought -- I bet the new color mixing will increase payload size. Which of these would you rather send over the wire?

  A) color-mix(in srgb, var(--primary-color), white 50%)
  B) #abcdef

For me to give up scss, there needs to be a minifier that calculates colors ahead of time and emits them plain, the way scss does. (Maybe there already is, who knows)