also, is there really a need to change the factory presets?
with so much available storage memory on cards, usb, internal flash, isn't it better to keep factory styles save in their location for future use (you never know) and simply save your own edited, tweaked styles under a different name...? ROM can (and should) be just a fix launching platform for personal creation.

i believe it is better to keep these two things separately. it's safer.