Displaying HTML as option/parameter in User Macro

Hi community!

I’m trying to create a custom user macro for my org and I’d like the ability to display rendered HTML as a parameter for selection. The macro will basically be a custom button creator for end users. I’d like to have the ability for them to add an icon to the button based off of the icons available through AUI - Icons - AUI Documentation (atlassian.com)

How can I render those icons within a select/enum option for the custom user macro?