Introducing "Ninju" at www.flashbynight.com/ninju
This game takes the concept of fighting with colors, as in the game "Clowd" and applies it to a ninja setting. The main character, Ninju, can turn orange or green to battle the orange or green enemies. Black enemies can only be killed using throwing stars, which you can collect during the game.
The game has 12 short levels, so see if you can finish them all. If you collect 20 stars, you get an extra life to help you along your way.
Some screenshots:
