Kaoiken would work like turbo. Using ki to raise PL.
It would be Red.
There would be only 3 buttons needed
J=Lower Kaioken K=On/Off L=Raise Kaoiken
Eg. I'm Goku 1,000,000PL I use kaioken (starts at KKx1)
My PL is 1,000,000 x 1 1/4 =1,250,000
If I press L I do Kaoiken x2...