lol breakfast!
you can set it yo autosave any changes you make.
rgb values should generally be ok to change, im also a ps user to so i use 105/255 that format, easiest to follow...
you can also change 'rgb' to 'rgbt', add a fourth value and get transparancy!
another tip is really to check the help file, its actually pretty good, with examples you can copy directly to your inc file and such