Well changing
isn't something that will make your phone better or faster. Changing from RED to BROWN is for security reasons. There isn't best on RED and BROWN.
RED means that all the files when the phone boot are signature checked , so if we edit the file "phone_app.cxc" and add patches to it the signature will change and your phone will not boot.
BROWN are the "phones" that developers have , they can edit everything and their phone will boot , because it doesen't do signature checks on boot. I mean "NOTHING" is checked at boot , the phone just boots.
We use BROWN because is the best way to patch our phones permantly. We don't need to find a way for RED because there is the way with BROWN. When we add patches the signature changes , but if we have BROWN it isn't checked on boot , so we have patches and a working phone
Hope you understand....