v3.15.0

Minor Changes

• #437 9480486 Thanks @tenphi! - fill and backgroundColor mix two comma-separated colors into one background-color: fill: '#dark 4%, #surface' compiles to color-mix(in srgb, var(--dark-color) 4%, var(--surface-color)). With an opaque #dark, that is exactly the color the old overlay layer painted, but contrast checkers such as axe-core can read it, and it transitions like any other color.

  Two colors separated by a space (fill: '#surface #dark.04') are deprecated and warn in development. Their output is unchanged until the next major version; rewrite them as a mix, e.g. '#dark 4%, #surface'. A mixed color with an opacity but no percentage ('#dark.04, #surface') warns too, because the mix comes out see-through.