Perhaps adding another parameter to DiscourseEmbed that we can specify, like a discourseEmbedClass that we can then attach to the iframe/embedded tag as a class, so we can target it with the embed CSS?
DiscourseEmbed = { discourseUrl: 'http://discuss.pixls.us/',
discourseEmbedUrl: 'REPLACE_ME' };
I’m happy to create a PR if someone could maybe point me to the relevant places to get started hacking?