Mikanma - Orange Horse.  Combining Akane's "Color" theme with the horse
theme.  Orange happens to be my favorite color.  Blue Horse is Aoima
(say that three times fast), Green Horse is Midorima (sound familiar?)
and Yellow Horse is Kiiroma.

The colour idea seems good...how 'bout Kima using the Ki from yellow,
without the iro 'colour' part... also proposed are Kuuma or Sorama using the
kanji for sky...I was thinking of star horse, but neither Seima nor Shouma
sounds good to me...