think the hairstyle you had a year ago would be great.
maybe you can use some clip on extentions to make it longer to get some other styles.
your hair a year ago is kinda a mini version of kanon's hair. =)
or you can do it a bit like kyo's. you can also back comb the back to make it even more 'Jrock'
don't know if you want to cut it?? but you can do the back short and back comb it.
or you can even do this with it. just let it get a bit layerd. and back combing again.
hopes it kinda makes sence XD
*edit* about the color: maybe you can dye it a bit blond? think it will also go great with your normal haircolor.
if you backcomb your hair you can just spray heavy hairspray in it.
my brother is 'emo-ish' and he put his hair up and makes it hard with titan spray. =)
it works sooo good!