Map colour palette changed (brown shade?)

In latest snapshot the color palette for maps has changed.
See the picture attached for comparison: (PRE snapshot | Snapshot)

Comment from [Mojang] Jeb (Jens Bergensten) on reddit:

I think the problem here is that one brown shade changed, but not the other? Your gradients have disappeared, which is a shame. It would be helpful if you filed this as a bug.