A nice feature would be a light and dark mode - so that we could use an embed snippet that is pre-configured for a site depending on the background color (if this is possible.)

The default snippet works well on sites with light colored backgrounds, but for darker backgrounds, the dark grey text inside the iframe doesn't show well. I got around this by assigning a lighter background color to #remarkbox-div which works but isn't ideal obviously.

I guess another way around it is signing up for a plan (wink wink) so I can edit the namespace settings and use a self-hosted CSS file, but in my case, my blog is so small that I'd be lucky to get more than 5-10 comments in a month, so its not worth it. I'm loving Remarkbox and the implementation so far though. Excellent work!