Old School Color Cycling with HTML5.

Anyone remember Color cycling from the 90s? This was a technology often 
used in 8-bit video games of the era, to achieve interesting visual 
effects by cycling (shifting) the color palette. Back then video cards 
could only render 256 colors at a time, so a palette of selected colors 
was used. But the programmer could change this palette at will, and all 
the onscreen colors would instantly change to match. It was fast, and 
took virtually no memory. Thus began the era of color cycling.

http://www.effectgames.com/effect/article.psp.html/joe/Old_School_Color_Cycling_with_HTML5
 

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