The current trend has to been to increase the value of any win, with things like 3 points for a win and only 1 point for a draw. In my opinion increasing the points based on color is an interesting idea, but it's unlikely to be seriously considered because of the fact that it would disrupt the "symmetry" in chess both the sort of abstract fashion, and also in the specific - such as requiring tournament pairing systems based on score to be completely reworked.

One tie break system, armageddon, does break the symmetry by giving black draw odds (he wins if the game is drawn) but less time in a blitz game. But it's very poorly regarded and generally only used as a this-game-MUST-have-a-decisive-result last resort.