you can try an air purge for the missing colors & make sure it have free flow to the outer.
If there is proper free flow,,then it cud be only the caping station or the head data cable have some issues,,may be capping not seated properly or no suction from the pump,,or the head cable not fixed firmly on the slider pcb above the whole head carriage,,,,
most likely the capping placement & the pump,,,,gud luck,