Chasing a "highly compressed" version of Sonic Colors for Wii is a wild goose chase that leads to broken games and wasted bandwidth. If you are space-constrained:
No. Highly compressed files are usually just "trimmed" or compressed via WBFS, meaning the game code, graphics, and music are 100% intact. sonic colors wii highly compressed
Meaning music or cutscenes have been removed to save space. Chasing a "highly compressed" version of Sonic Colors