These are some simple sprites i made for a game of mine.
you can play it here http://dejitaruforge.wordpress.com/2012/02/13/pillars/
Interesting dithering technique to get that partial banding on the balls, I like it.
The rightmost lightning bolt is suffering from (non-good) banding, making it look chunky. If you avoid stacking 3 or more colors with runs of the same length, this won't happen.
Example edit of it
Not bad Cobalt ;) Haha.