The iDetail Web Service in general uses color-coded, easy-to-read buttons with icons relating to their function.

Green

Green is used for constructive actions, such as Save Changes and Create, and, for example, to indicate positive results while typing in a Filter field

Red

Red is used for destructive actions, such as Delete and Remove

And also to indicate no filtering results

Blue

Blue generally indicates some nondestructive activity

Orange

While orange generally indicates a negative, but reversible change