[css-color-4] Allow percent as well as float 0.0 to 1.0 in color() args w3c#3450

Author: svgeesus

css-color-4/Overview.bs

@@ -2011,7 +2011,7 @@ Profiled, Device-dependent Colors</h2>
 	Its syntax is:
 
 	<pre class='prod'>
-		<dfn>color()</dfn> = color( [ <<ident>>? [ <<number>>+ | <<string>> ] [ / <<alpha-value>> ]? ]# , <<color>>? )
+		<dfn>color()</dfn> = color( [ <<ident>>? [ <<number-percentage>>+ | <<string>> ] [ / <<alpha-value>> ]? ]# , <<color>>? )
 	</pre>
 
 	The color function takes one or more comma-separated arguments,
@@ -2030,16 +2030,16 @@ Profiled, Device-dependent Colors</h2>
 		If the <<ident>> names a non-existent colorspace,
 		this argument represents an <a>invalid color</a>.
 
-	* Either one or more <<number>>s providing the parameter values that the colorspace takes,
+	* Either one or more <<number>>s or <<percentage>>s providing the parameter values that the colorspace takes,
 		or a <<string>> giving the name of a color defined by the colorspace.
 
 		<dl class=switch>
 			<dt>If the colorspace takes numeric parameters
 			<dd>
-				If more <<number>>s are provided than parameters that the colorspace takes,
+				If more <<number>>s or <<percentage>>s are provided than parameters that the colorspace takes,
 				the excess <<number>>s at the end are ignored.
 
-				If less <<number>>s are provided than parameters that the colorspace takes,
+				If less <<number>>s or <<percentage>>s are provided than parameters that the colorspace takes,
 				the missing parameters default to ''0''.
 				(This is particularly convenient for multichannel printers
 				where the additional inks are spot colors or varnishes
@@ -2049,7 +2049,7 @@ Profiled, Device-dependent Colors</h2>
 				this argument represents an <a>invalid color</a>.
 			<dt>If the colorspace defines named colors
 			<dd>
-				If <<number>>s are provided,
+				If <<number>>s or <<percentage>>s are provided,
 				or a <<string>> is provided that doesn't match any of the color names
 				defined by the colorspace,
 				this argument represents an <a>invalid color</a>.