This color red thing is very interesting.  I mostly put out green or turquoise nets for my horses' hay and when it is going to storm, I put out multiple nets.  I have a couple of "raspberry" ones (sort of a dark, bright pink color) and every time so far, both horses bypass their green nets and go after their raspberry net and finish it first. Makes me wonder!
--
Linda in Grass Valley, CA  2020  Midnight and Ostara
https://ecir.groups.io/g/CaseHistory/files/Linda%20Midnight%20OStara

How true. I held a soup bowl up to the muzzle and invited the horse to eat the pellets inside. She could not see what she was eating but I could observe. A capsule the same size and color of the pellets containing some sort of pill was mixed in. Whenever a capsule touched the corner of her mouth it was shoved aside. Next step then would be to smear the capsule with something sticky and same texture as the mix such as flax oil that is already in the mixture. Sight, sound, smell and touch so much superior in our equine friends.
--
- Frances C.
December 2017, Washington & California
Case history: https://ecir.groups.io/g/CaseHistory/files/Frances%20and%20Phoenix
Phoenix's Photo Album: https://ecir.groups.io/g/CaseHistory/album?id=12382

I doubt the color of the pergolide capsule would help. Horses have extremely sensitive lips as well as sense of smell.
--
Eleanor in PA

www.drkellon.com 
EC Owner 2001
The first step to wisdom is "I don't know."

You can purchase empty gelatin capsules of different colors and run your own tests.  Let us know what you find!
--

I read that horses can’t see the color red. When giving compounded pergolide, wouldn’t it be a good idea to make the capsules red?
--
LJ Friedman  Nov 2014 Vista,   Northern  San Diego, CA

Jesse( over the rainbow) and majestic ‘s Case History 
Jesse's Photos