I used the rainbow flag because it is the most well-known pride flag. I so not necessarily see it as purely a gay pride flag, as it is often used to represent pride in general.
Be accepting of yourself because many other people are accepting of you. Whatever you are, within reason, is something that you should be accepting of.
Gay, straight, asexual, or something between; dark-skinned, fair-skinned, or something between; male, female, or something between…
…accept yourself.
(And yes, he’s a stallion)