It was okay.
The grammar during the tutorial phases was appalling, but I suppose that can be expected over the internetz. I recommend more diverse backgrounds, something psychedelic and flashing would be neat- it would neater if it weren't so slow. My soundcard is fried so I don't know how well that suggestion would fit with the music. Temporary power-ups or a special meter would be awesome. For example, you could have one that eliminates all red orbs on screen or one that causes the green orbs to gravitate towards your cursor.
Considering this is your first encounter with flash and actionscript it's a good game, but nothing that could hold my attention in it's current state.