Pastel Meadow Grass.
As always, the colors of the grass are natural, and what you see is the same as the amazing colors that I see in the camera viewfinder. The colors can change with the angle of the sun, as clouds alter the mood, and as background leaves and foreground blades blow in and out of the frame. Down near the roots of the grass, the colors are particularly fantastic, and autumn's colors in the lowly mountain meadow grass are every bit as amazing as the more obvious fall colors on a New England hillside.
You can read more details about my natural wild grass photographs (i.e., not photoshopped) at A Lawnmower Subversive.