Surprised to see their haircolor, arent you? xDD Yeah. Their hair is silver. I used two different types of silvery colors for their yair, though. (Koiji's is a more blue silver than Keiji's)
Since they dont have the same haircolor, that would make them Ferternal (Maybe wrong spelling) twins, not identical twins. They look alike, though, cos they style their hair the same way, and wear similar clothing. xD
anyways, info on them:

Names: Keiji(left) and Koiji(right)
Age: 16
Birthday: (none yet... >.>;;)
Gender: Male (both.)(le duh. xD)
Hobbies: [Keiji]Hanging out with Koiji, Playing sports, flirting w/ girls (Whut the heck? oAo;;) [Koiji]Hanging out with Keiji, Reading, playing sports, hanging out w/ Celia. (See my fan art picture Random OC to find out who celia is.)
Other Info: Keiji is the cooler and more popular one, i guess you would say. Koiji is a little more quiet than Keiji. (Although they're both pretty social.) You can tell them apart a few ways... Their haircolor is slightly different. (Koiji's hair is bluer, as I said earlier.) They act a little different, and... Koiji is usually to the right of Keiji. (as seen in the picture. x3) Uhm... Yeah. I'll say nothing more, so I wont ruin the story, for when I make it. xD