question: you say not to use colours from sexualities/genders that you aren't a part of [or however you can word it oof]. bit straight/cisgender ally flags have colours from the gay/trans flags, would you still be able to use them?
Yes. As long as you're not claiming the colour on your pony come from the gay/trans/bi/etc. flag when you are not that, and explain where the colours come from, you're fine!