Atomic Blocks Accordion Arrow Icon

I’m developing a new website and am using atomic blocks for containers and the advanced columns. I’ve been able to override AB styles with my own custom stylesheet rather easily up until the accordion menu.

With the accordion menu, I need to change the style and location of the arrow icon but it appears to be using the browser to generate that arrow rather than inserting it as option the developer can change via CSS. Am I missing something where I can change it?

If there’s not a way to change it, do you plan on adding one? And in the meantime, I’m wondering if there’s a way I can simply hide it and then insert my own arrow style using the ::before or ::after css attribute.

Any help would be appreciated!