SheetMusicNorthwest Piano Keytops - Piano Key Replacement - Simulated Ivory Complete Set

How do you remove the old key tops? Is tjere a special tool that won't cause damage?

can I just glue them to the tops of my Clavinova keys?

Are these an off white or a bright white?

Is it possible to install these without removing original ivory on the keys? can they just be glued on top of the normal keys?