hair color + hair length + valk color coordination= badassness.
Kakizaki - brown hair + short hair + white valk = 0/3 badass. green stripe on valk = no help.
Hikaru - black hair + long hair + white Valk = 1/3 badass. red stripe on valk = no help.
Milia - Green hair + long hair + red valk = 2/3 badass. (remember, the green q-rau is like a white valk. it's not a special color. and milia's red valk, tho a special color, does not color coordinate with her cool hair.)
Roy - yellow hair + long hair + white valk with yellow stripe= 2/3+ badass (remember, anything not black/brown hair to japanese = cool. the yellow stripe on his valk might have made him a bit more badass.)
Max - Blue hair + long hair +blue valk = 100% Badass. (even his q-rau was blue. perfect color coordination!)