Undefined palette indexes should take value from 'color', actually. Added more details.

Author: tabatkins

css-fonts-4/Overview.bs

@@ -11,6 +11,10 @@ Warning: not ready
 Ignored Terms: font-palette, <named-palette-color>
 </pre>
 
+<pre class="link-defaults">
+spec:css-color-4; type:property; text:color
+</pre>
+
 Introduction {#intro}
 =====================
 
@@ -19,6 +23,13 @@ Intro goes here.
 <div class="issue">
 	Resolved at 2015 Sydney to add font-palette control.
 	<a href="https://lists.w3.org/Archives/Public/www-style/2015Feb/0211.html">Original proposal</a>.
+
+	Details: multicolor fonts now exist.
+	They expose several "palette indexes" that can be given different colors.
+	They might also expose predefined palettes.
+	We want to be able to tell the browser to use a predefined palette,
+	or to provide our own colors for a palette.
+
 	Final proposal is:
 
 	1. Add a 'font-palette' property.  For now the grammar is just:
@@ -33,7 +44,8 @@ Intro goes here.
 		with the name of each declaration defining a name for a particular palette color,
 		and the value being an integer for the index of that palette color.
 		<<named-palette-color>> is <code><<ident>> <<color>></code>.
-		Any palette colors not given an explicit value default to opaque black.
+		Any palette colors not given an explicit value default to value of 'color'
+		(so by default it just renders solidly with 'color' value, as normal).
 		If a palette color name occurs more than once, the last one wins
 		(so you can declare a palette in a variable, and override bits as desired).
 </div>