Updated the readme color descriptions to be more accurate

Author: robinwassen

README.md

@@ -12,11 +12,13 @@ ng-annotate
 
 Main annotation class is `.ng-annotation`.
 An annotation is extended by adding a type class to `.ng-annotation`.
-Available type classes are:
+
+Available default type classes are:
 
-	.red - Sets background to red, color to white and border-color to red.
-	.green - Sets background to green, color to white and border-color to green.
-	.blue - Sets background to blue, color to white and border-color to blue.
-	.pink - Sets background to pink, color to white and border-color to pink.
+	.red - Sets background to red, color to black and border-color to red.
+	.green - Sets background to green, color to black and border-color to green.
+	.blue - Sets background to blue, color to black and border-color to blue.
+	.pink - Sets background to pink, color to black and border-color to pink.
 	.yellow - Sets background to yellow, color to black and border-color to yellow. 
+	.teal - Sets background to teal, color to black and border-color to teal.