[css-fonts-4] Rearrange prose regarding override-colors

Author: litherum

css-fonts-4/Overview.bs

@@ -6557,22 +6557,20 @@ Overriding a colors from a palette: The 'override-colors!!descriptor' descriptor
     Initial: N/A
     </pre>
 
-    This descriptor overrides or adds a color
+    This descriptor overrides or adds colors
     to the initial color palette represented by this ''@font-palette-values'' rule.
-    If the initial color palette represented by the ''@font-palette-values'' rule
-    (i.e. by using the 'base-palette' descriptor)
-    already includes a color at the index of this descriptor's key,
-    that color is overwritten by the color specified in this descriptor's value.
-    Otherwise, a new color is added to this color palette at the index of this descriptor's key.
-
-    Each item in the comma-separated list represents
-    a tuple of
-    an entry into the palette
-    an a color to replace it with.
 
     The '@font-palette-values/override-colors' descriptor takes
-    a comma-separated list
-    of palette index entries and colors.
+    a comma-separated list of palette index entries and colors.
+    Each item in the comma-separated list represents a tuple of
+    an entry into the palette an a color to replace it with.
+
+    For each key/value pair in the value of this descriptor,
+    if the initial color palette represented by the ''@font-palette-values'' rule
+    (i.e. by using the 'base-palette' descriptor)
+    already includes a color at the index of the key,
+    that color is overwritten by the color specified in this descriptor's value.
+    Otherwise, a new color is added to this color palette at the index of the key.
 
     Palette index entries
     in the ''@font-palette-values/override-colors'' descriptor
@@ -6581,25 +6579,23 @@ Overriding a colors from a palette: The 'override-colors!!descriptor' descriptor
     in the selected palette.
 
     Strings specified in the value of this descriptor
-    are matched
-    according to [[#localized-name-matching]].
+    are matched according to [[#localized-name-matching]].
 
     Integer values are zero-indexed.
 
     Using CSS Variables is explicitly expected to be valid in the value of this descriptor.
-    Using CSS Variables is disallowed in the key of this descriptor.
     CSS Variables are resolved in the context of the element to which the 'font-palette' property applies.
-    This means that using 'font-palette' with the same value on two different elements
+
+    Note: This means that using 'font-palette' with the same value on two different elements
     might result in different used palettes
     because the value of variables inside the ''@font-palette-values'' rule
-	might apply differently in the context of those two elements.
-
-	The colors specified
-	in versions 0 and 1 of the CPAL table
-	are in sRGB.
-	Colors provided from CSS
-	(as overrides, or as new entries)
-	may use any supported colorspace.
+    might apply differently in the context of those two elements.
+
+    Colors provided from CSS
+    (as overrides, or as new entries)
+    may use any supported colorspace.
+
+    Note: The colors specified in versions 0 and 1 of the CPAL table are in sRGB.
 
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