updated header desc. RGB to CMY colored shadows

Well I guess it's more Magenta Yellow and Cyan

examples/webgl_lights_spotlights.html

@@ -37,7 +37,7 @@
 		<div id="info">
 			<a href="http://threejs.org" target="_blank">three.js</a> - This animates 3 Spot Lights - by <a href="http://master-domain.com" target="_blank">Master James</a><br />
 			Orbit Controls are available to navigate. Click to set random color CTRL-Click for White.<br />
-			Where the lights converge to make white light the shadows will appear as R G B from pairs of lights.
+			Where the lights converge to make white light the shadows will appear as C M Y from light color pairing.
 		</div>
 
 		<script src="../build/three.js"></script>