var r = c1.r - c2.r; var g = c1.g - c2.g; var b = c1.b - c2.b; var a = c1.a - c2.a; return r * r + g * g + b * b + a * a; }, 
var r = c1.r - c2.r; var g = c1.g - c2.g; var b = c1.b - c2.b; var a = c1.a - c2.a; return r * r + g * g + b * b + a * a; }, 
	diff2Color: function(c1, c2){		var r = c1.r - c2.r;		var g = c1.g - c2.g;		var b = c1.b - c2.b;		var a = c1.a - c2.a;		return r * r + g * g + b * b + a * a;	},
5168	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/5168/c7d2075e077f52d30bb22fd290f5cbb6f2dca879/lighting.js/clean/gfx3d/lighting.js