How do you change sonics color to red Sonic dx

There is no way yet to change him at the story-stages in red sonic. But in the sonic simulator you can. If you use wii remote+nunchtuk try some buttons like Z, 1, 2, B, arrow up/down/left/right. Some of them change the colour of sonic.
Same for the other controlers try some buttons when you select between sonic & your mii!