method toString fix

Author: PitPik

README.md

@@ -56,7 +56,7 @@ $('.color').colorPicker({
     gap: 4 // gap to right and bottom edge of view port if repositioned to fit
     preventFocus: false // prevents default on focus of input fields (e.g. no keyboard on mobile)
     body: document.body // the element where the events are attached to (touchstart, mousedown, pointerdown, focus, click, change),
-    forceAlpha: force printing alpha channel (undefined = auto; false = never print alpha)
+    forceAlpha: // force printing alpha channel (undefined = auto; false = never print alpha)
 });
 ```
 ####Some tips

colors.js

@@ -87,7 +87,7 @@
 	};
 
 	Colors.prototype.toString = function(colorMode, forceAlpha) {
-		return ColorConverter.color2text(colorMode.toLowerCase() || 'rgb', this.colors, forceAlpha);
+		return ColorConverter.color2text((colorMode || 'rgb').toLowerCase(), this.colors, forceAlpha);
 	};
 
 	// ------------------------------------------------------ //