The autumn colors on its own is not concerning.
If the canopy is degredating so fast it won't survive until harvest, that is a concern. a snapshot doesn't show rate of change... you'll have to assess that and adjust accordingly. A fade is fine, but if the canopy dies before it can finish ripening, that's no good. You can reverse chlorosis.. A fade merely ensures you aren't over-feeding.. don't over-do it.