This photo was taken at a competition that was deluged with rain. You can see the grey specks of rain drops against the black horse. I edited this photo in Lightroom Classic to remove any color from the background and left only the red on the horse’s bonnet.
I think the Animal challenge was a couple of weeks ago but What the Heck I thought I thought I could respond now.
HorseAddict 
I’d love to hear from you!