Mercury Skins
     Each  stage  has bonus points to collect. Collecting a set number
of points will unlock the following skins as you progress in the game.

30mph Speed Limit Sign Skin   Collect the bonus points in each stage 
Basketball Skin               Collect the bonus points in each stage 
Football Skin                 Collect the bonus points in each stage 
Smiley Face Skin              Collect the bonus points in each stage 
Snooker Ball Skin             Collect the bonus points in each stage