If @color is resolvable, @resolved_color will be filled in
with the resolved color, and %TRUE will be returned. Generally,
if @color can’t be resolved, it is due to it being defined on
top of a named color that doesn’t exist in @props.
When @props is %NULL, resolving of named colors will fail, so if
your @color is or references such a color, this function will
return %FALSE.
If @color is resolvable, @resolved_color will be filled in with the resolved color, and %TRUE will be returned. Generally, if @color can’t be resolved, it is due to it being defined on top of a named color that doesn’t exist in @props.
When @props is %NULL, resolving of named colors will fail, so if your @color is or references such a color, this function will return %FALSE.