Well, i just got some time to try out this new release from CAPCOM, and
of course i wanted it's cheats. To make things easier, set up your
keyboard keys as:

3 X Punch   Í /
3 X Kick    Í *
Select      Í Space Bar

Put the cursor selector in the RANDOM selector in the fighter select menu.

Press and hold the designed key to select your fighter:

AKUMA (GOUKI)   Í 3X KICK + Punch or Kick button
M. BISON (VEGA) Í 3X PUNCH + Punch or Kick button
DAN HIBIKI      Í SELECT + Punch or Kick button

By the way, when you do this cheat using PUNCH button, you select 'normal'
color for your character.  Pressing kick button, you select 'second' color
for your character.