The Gold is still in beta. When accepted you get two minor features (stickers and solid colour backgrounds). But 'more importantly??' it allows you to subscrib

The Gold is still in beta. When accepted you get two minor features (stickers and solid colour backgrounds). But 'more importantly??' it allows you to subscribe for $5/month to get more style (stickers, images as board backgrounds, emoji, large attachments, and referral scheme).