Late Fall Colors, Sunrise on the Lake (Graphic Novel filter)

A problem I've had with my graphic novel images is that the colors tend to get toned down significantly as I merge the color image into the black and white image. (I usually use something around 60-70% opacity, so as not to lose the effect of the filter.) The color image here worked well, I believe, because the HDR with which I was working was very much overblown. Here, they look quite normal for fall (late fall) colors. 

Thanks for stopping by!