Fall in Alaska is brief and spectacular. Vibrant colors may only stick around for a few days before receding into winter, especially at higher mountain elevations.
I have never seen grass turn such vibrant colors as I have along the Delta River in September 2020. Making the scene even more stunning was a dramatic cliff background with more wonderful fall foliage! While I do edit my images, I strive to make them look natural in terms of color and saturation. Colors often seem exceptionally vibrant on such a cloudy day.