I'm attempting to color code a series of numbers using the custom number
format in the FORMAT MENU.

I need to color code four numbers (or ranges of numbers)

10%, 50%, 90% and 100%

Currently I have:
[Yellow][=0.01] 0%;[Green][=0.05]0%;[Blue][=0.09];[Red][=1]0%;@

But I can't get it to work.

Any ideas why?