Color changers mean...

[OrigamiasaEnthusiast]

Do color changers mean just areas where you use the other color of the paper, and have it designed that way?

[sattej]

Generally, yes. Color changes using only origami technique will display the other side of a two-colored sheet. This is done by the basic design. A great example is Hideo Komatsu's 'Tiger', all of these stripes are achieved by showing the back-side of the paper with the basic design incorporating that idea from the start.

"Color changes" are also possible by painting, but this isn't as commonly accepted for achieving a two-color model.. I guess if you go down that road you can paint it however you want..

[OrigamiasaEnthusiast]

Thanks

[OrigamiasaEnthusiast]

Also, you know where to find Hideo's tiger?