Colors! is a simplistic digital 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.

Release notes:

Current features
Hard and soft circular brush
Pressure-sensitivity can affect opacity and brush-size
512×384 image resolution with 2 stage zoom
Replay the whole painting process of an image
Hue-circle and luminance and saturation-triangle style palette
Load and Save to memory card
Send painting as e-mail using Wi-Fi

Planned features
Fixing of minor painting artifacts
Better pressure calibration
Simple levels tool
Improved Wi-Fi support
DS-to-DS collaborative painting

http://www.collectingsmiles.com/colors