Different Background Pictures
When you beat the game you will be rewarded with new background pictures. To see them you need to save the game on an N64 controler pack after you beat chamelon twist 2. You will see the new pictures when you reset the N64 or exit any option screen (training, options, etc.)
Go to the level selection screen
Press START to see a new option labled COSTUMES alongside the SAVE and EXIT options.
Highlight the COSTUMES option, press the "A" button and select the desired costume of your choice.
Different Background Pictures...