The SVG parser reads neither, so fills came in black and strokes were dropped without a note. They are resolved before parsing: color(srgb|display-p3 ...) converted to the document's profile, color-mix(in srgb|oklab|oklch, ...) evaluated as CSS Color 5 defines it. Other spaces are approximated with a note; unreadable calls become a mid grey with a note. Bounded length, nesting and count.