diff --git a/LICENSE b/LICENSE
index 6ca5d99..c85f5e5 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,8 @@
 The MIT License (MIT)
 
-Copyright (c) 2015 Alexander Wunschik
+Copyright (c) 2010, 2011, 2012, 2013 by Juergen Marsch
+Copyright (c) 2015 by Alexander Wunschik
+Copyright (c) 2015 by Stefan Siegl
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/README.md b/README.md
index 6dc4d2d..394279a 100644
--- a/README.md
+++ b/README.md
@@ -104,3 +104,7 @@ Licensed under [MIT](http://opensource.org/licenses/MIT)
 
 ### 0.3.2
 * code cleanup
+
+### 0.3.3
+* `series.color` can be of type `function` (thx @stesie)
+
diff --git a/example/index.html b/example/index.html
index d260bd4..50fcfa7 100644
--- a/example/index.html
+++ b/example/index.html
@@ -26,7 +26,10 @@
 		var d2 = [[60,25,15], [70,40,6], [30,80,4]];
 		var options = { 
 			series: {
-				color: '#CCC',
+				color: function(x, y, value) {
+					var red = 155 + value * 10;
+					return 'rgba('+red+',200,200,1)';
+				},
 				bubbles: {
 					active: true,
 					show: true,
diff --git a/jquery.flot.bubbles.js b/jquery.flot.bubbles.js
index 2e79043..7c4c4a1 100644
--- a/jquery.flot.bubbles.js
+++ b/jquery.flot.bubbles.js
@@ -2,6 +2,7 @@
  * The MIT License
 
 Copyright (c) 2010, 2011, 2012, 2013 by Juergen Marsch
+Copyright (c) 2015 by Stefan Siegl
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
@@ -25,7 +26,7 @@ THE SOFTWARE.
 	"use strict";
 	
 	var pluginName = "bubbles";
-	var pluginVersion = "0.3.2";
+	var pluginVersion = "0.3.3";
 
 	var options = {
 		series: {
@@ -134,6 +135,9 @@ THE SOFTWARE.
 			y = offset.top + serie.yaxis.p2c(data[1]);
 			v = data[2];
 			r = parseInt(serie.yaxis.scale * data[2] / 2, 0);
+			if(typeof c === 'function') {
+				c = c.apply(this, data);
+			}
 			serie.bubbles.drawbubble(ctx, serie, x, y, v, r, c, overlay);
 		};