The description for the image() function says that it allows to use a solid color as an image. Though its syntax is defined as image( [ [ <image> | <string> ]? , <color>? ]! ) meaning that colors are only allowed as fallback values. So, in order to allow solid-color images, either the syntax needs to be changed to image( [ [ <image> | <color> | <string> ]? , <color>? ]! ) or image( [ [ [ <image> | <string> ]? , <color>? ]! | <color> ] ) or <image> may be changed to accept <color> values directly, i.e. <url> | <image()> | <image-set()> | <element()> | <cross-fade()> | <gradient> | <color> Furthermore, the syntax for the image() function suggests that the comma stands for its own and is not influenced by the question mark multiplier after <color>. Therefore I wonder whether the correct syntax would rather be (disregarding the changes suggested above) image( [ <image> | <string> ] [ , <color> ]? ) SebastianReceived on Thursday, 3 March 2016 13:38:24 UTC
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