I have created a custom duotone icon and I want to upload it to Font Awesome. Can you do that with the pro plan? Are only solid colors permitted?
Unfortunately, it looks like no. According to their Valid SVG requirements, the svg can only have "One
path element". Since duotone icons use multiple paths to differentiate the two tones (primary and secondary), it seems like we're stuck with 1 color for now. https://fontawesome.com/how-to-use/on-the-web/using-kits/prepping-icons-for-upload#valid-svgs