fn parse_rgb<'i, 't>(
color_parser: &ColorParser<'_, '_>,
arguments: &mut Parser<'i, 't>
) -> Result<ColorFunction, ParseError<'i>>
fn parse_rgb<'i, 't>(
color_parser: &ColorParser<'_, '_>,
arguments: &mut Parser<'i, 't>
) -> Result<ColorFunction, ParseError<'i>>