do no try to pass MS icon files to GD

include/colors.php

@@ -288,16 +288,23 @@ function hsl2rgb($arr) {
 
 		$size = @getimagesize($imageFile);
 
-		if (strtolower($size['mime']) == 'image/vnd.microsoft.icon' && class_exists("floIcon")) {
+		// to enable .ico support place floIcon.php into lib/
+		if (strtolower($size['mime']) == 'image/vnd.microsoft.icon') {
+
+			if (class_exists("floIcon")) {
 
 				$ico = new floIcon();
 				@$ico->readICO($imageFile);
 
 				if(count($ico->images)==0)
-				return null;
+					return false;
 				else
 					$img = @$ico->images[count($ico->images)-1]->getImageResource();
 
+			} else {
+				return false;
+			}
+
 		} else if ($size[0] > 0 && $size[1] > 0) {
 		   $img = @imagecreatefromstring(file_get_contents($imageFile));
 		}