Street Fighter 3: 3rd Strike Fight For The Future

Change the outfits colors
Finish the game in arcade mode with any fighter, after save. Go to the
fighter selection screen and highlight any character, then hold Start
and tap any attack button

Taunt your opponent
Press L + R

Enable low resolution mode:
Hold L + Start at the Capcom logo

Enable high resolution mode:
Hold Start + X at the Capcom logo.

Unlock Extra options menu and Gill as playable character:
Finish the game with 15 different fighter in "Normal" mode instead
of "Original" settings.