takes a value from 0-1 and returns an rgb color string

float-to-color.js

/**
 * takes a value from 0-1 and returns an rgb color string
 */
function floatToColor(val) {
	var c = Math.floor(5*255*val);
	var r = 255, g = 255, b = 255;
	while(c > 0) {
		if(r!=0 	&& g==255 && b==255)	r--;	//rgb(255,255,255)		-> rgb(0,255,255)
		if(r==0 	&& g==255 && b!=0) 		b--;		//rgb(0,255,0)			-> rgb(0,255,0)
		if(r!=255 && g==255 && b==0) 		r++;		//rgb(0,255,0)			-> rgb(255,255,0)
		if(r==255 && g!=0 	&& b==0) 		g--;		//rgb(255,255,0)		-> rgb(255,0,	0)
		if(r==255 && g==0 	&& b!=255)	b++;		//rgb(255,0,0)			-> rgb(255,0,255)
		c--;
	}
	var color = 'rgb(' + r + ',' + g + ',' + b + ')';
	return color;
}