ah no that will only take you so far, say you see what we see as red yellow, you call it red but when your told to draw red, you will pick up the red crayon, build it will seem red to you, so no problems yet.. But when you are told to draw yellow, you will most likely use the same crayon, that will tell them your seeing both colours as yellow.

But i guess with the right colour sequences, then yeah nobody would know... shit your scaring me!!