This feels like a Nightvale bit...

My graphics card isn't powerful enough to render the image. I read "chestnut horse" and then I stopped.

this sounds like something i'd see on e621 during a fever dream in the micro/macro tag

what people with aphantasia see:

an all-encompassing, beautiful horse

A dark mane on a chestnut horse is quite unusual, from that alone one can infer the deep red-brown of the coat and perhaps a slight hint of dappling on the quarters. Having one's face full of horse nostril, all velvet and whiskery, is not an unfamiliar experience, although I don't get it as much these days because my horse has a moustache which is usually cold and damp.

Pet horse

The horse cannot be petted. It frets, hungry as it has yet to eat. The grass around the barn is dry.

Feed horse

You have nothing to feed the horse.

Look around

You are at the barn. The sun is out and the sky is clear. The air is dry due to the recent drought. Nearby the barn in a field is a lone tree. You see it has an apple, just on it's lowest branch. It's not too far.

Looking at the stable, you see a horse. It beautiful, still healthy with a basin of water nearby. The water is dirty and needs to be changed. If you remember correctly, there is a hose by the barn.

Change basin

The horse will not let you. It hungers for the apple.

Walk to tree

You walk to the tree. As you near, you see the sun. It sees you, too.

Hide

There is nowhere to hide. The horse betrayed you.

the horse is the white of the eyes

EXCEPTION: this device doesn’t have the chestnut color pack installed.
OK/CANCEL/CONTINUE?