This is probably the coolest piece of homebrew software that i have seen yet for the Nintendo DS. This app is described best on it’s website

Colors! is a simplistic digital painting application for Nintendo DS based on modern painting-techniques developed for drawing tablets in programs like Photoshop. By taking advantage of the pressure sensitivity of the DS touch-screen it becomes a perfect portable digital sketch-book.

The app is constantly in development and they are planning on adding a lot of awesome features as it’s currently pretty simplistic. All you need to run this is a compatible Nintendo DS Flashcart and of course a Nintendo DS. Theres a gallery online of pictures people have made with this.

Via: Gizmondo