Dr. King Today:

There is no way to know what Dr. King's positions would be were he alive today. Conservatives and libertarians can admire King's appeal to color-blindness and the Declaration of Independence (as a core American principle). If we were to freeze King at that place in time his color-blind ideal seems to be consistent with what conservatives and libertarians now support (although not all of us support forcing color-blindness on the private sector).

However, there is no way to know whether King's position would (or not) have moved with the rest of the Civil Rights establishment into support for affirmative action, race-quotas and preferences and the like.