Reworded the premultiplied explanation note in the Color Stops section, per feedback from Brian Mantheos.

Author: tabatkins

css3-images/Overview.html

@@ -1031,16 +1031,17 @@ <h3 id=color-stop-syntax><span class=secno>5.4. </span> Gradient
    rgba() 4-tuple, one can convert this to a premultiplied representation by
    multiplying the red, green, and blue components by the alpha component.
    For example, a partially-transparent blue may be given as
-   rgba(0,0,255,.5), which would then be expressed as (0,0,127.5,.5) in its
-   premultiplied representation. Note that fully opaque colors have the same
-   representation in rgba and premultiplied-rgba (you multiply the components
-   by 1), and all fully transparent colors are expressed the same way in the
-   premultiplied representation (you multiply each component by 0, so no
-   matter what the source color was in rgba, the premultiplied representation
-   is (0,0,0,0)). Interpolating colors using the premultiplied
-   representations rather than the plain rgba representations tends to
-   produce more attractive transitions, particularly when transitioning from
-   a fully opaque color to fully transparent.</p>
+   rgba(0,0,255,.5), which would then be expressed as [0, 0, 127.5, .5] in
+   its premultiplied representation. Interpolating colors using the
+   premultiplied representations rather than the plain rgba representations
+   tends to produce more attractive transitions, particularly when
+   transitioning from a fully opaque color to fully transparent. Note that
+   transitions where either the transparency or the color are held constant
+   (for example, transitioning between rgba(255,0,0,100%) and
+   rgba(0,0,255,100%) or rgba(255,0,0,100%) and rgba(255,0,0,0%)) have
+   identical results whether the color interpolation is done in premultiplied
+   or non-premultiplied color-space. Differences only arise when both the
+   color and transparency differ between the two endpoints.</p>
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   <h2 id=sizing><span class=secno>6. </span> Sizing Images and Objects in CSS</h2>

css3-images/Overview.src.html

@@ -774,15 +774,11 @@ <h3 id='color-stop-syntax'>
 	one can convert this to a premultiplied representation by multiplying the 
 	red, green, and blue components by the alpha component.  For example, a 
 	partially-transparent blue may be given as rgba(0,0,255,.5), which would 
-	then be expressed as (0,0,127.5,.5) in its premultiplied representation.  
-	Note that fully opaque colors have the same representation in rgba and 
-	premultiplied-rgba (you multiply the components by 1), and all fully 
-	transparent colors are expressed the same way in the premultiplied 
-	representation (you multiply each component by 0, so no matter what the 
-	source color was in rgba, the premultiplied representation is (0,0,0,0)).  
+	then be expressed as [0, 0, 127.5, .5] in its premultiplied representation.  
 	Interpolating colors using the premultiplied representations rather than 
 	the plain rgba representations tends to produce more attractive transitions, 
-	particularly when transitioning from a fully opaque color to fully transparent.</p>
+	particularly when transitioning from a fully opaque color to fully transparent.
+	Note that transitions where either the transparency or the color are held constant (for example, transitioning between rgba(255,0,0,100%) and rgba(0,0,255,100%) or rgba(255,0,0,100%) and rgba(255,0,0,0%)) have identical results whether the color interpolation is done in premultiplied or non-premultiplied color-space.  Differences only arise when both the color and transparency differ between the two endpoints.</p>
 
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