function makeProxy(type) {
            var name = type + "DistanceProxy";
            exports[name] = function() {};
            exports[name].prototype.distanceBetween = function(a, b) {
              //a.distanceToHSV( b );
              return a["distanceTo" + type](b);
            };
          }
Factory method. Creates a new ColorList based on the given
{@link ColorTheoryStrategy} instance and the given source color. The
number of colors returned will vary with the strategy chosen.
@param {string|toxi.color.theory.*Strategy} strategy either a string
for a strategy, such as "splitComplementary" or an instance of a strategy
@param {toxi.color.TColor} c a color to base the strategy off
@return {toxi.color.ColorList} new list