hmm.. idunno, of course lana's brunette hair looks good, but i still thinks good with her coppery locks. it's so much more 'lana' as a look just like lohan before she went crazy, plus what meaning will her 'scarlet starlet' from many songs have if she's switching her hair around?
lol that's just my 2 cents
plus, being a red head makes her stand out so much more from all the other blonde&brunette girls in the music scene