The Blue power pads are for water balls that knock/kill things, open things and power up things (like powering up balloons which open doors)
The Pinkish-Purple power pads summon clams, they help Spongebob get to places by forming bridges.
The Orange power pads allow Spongebob to pick up/throw boxes.
The Green power pads are to transport Spongebob over large obstacles.
The Yellow power pads make Spongebob go really fast so he can run over things that break quickly.
Added by: viva_la_bam_rules Feb 23rd 2008, ID#1978