src/utils/color.js
function (scale) {
            scale = me.Math.clamp(scale, 0, 1);
            this.glArray[0] *= scale;
            this.glArray[1] *= scale;
            this.glArray[2] *= scale;

            return this;
        }
function (scale) {
            scale = me.Math.clamp(scale, 0, 1);
            this.glArray[0] *= scale;
            this.glArray[1] *= scale;
            this.glArray[2] *= scale;

            return this;
        }
function ( scale ) { scale = me . Math . clamp ( scale , 0 , 1 ) ; this . glArray [ 0 ] *= scale ; this . glArray [ 1 ] *= scale ; this . glArray [ 2 ] *= scale ; return this ; }
Darken this color value by 0..1
@name darken
@memberOf me.Color
@function
@param {Number} scale
@return {me.Color} Reference to this object for method chaining
Darken this color value by 0 .. 1