body color doesn't work with iFrame embeds #1832
Description
The ?bodyColor URL parameter for iframe embeds doesn't work. This appears to be because it generates the HTML:
<style>
#full-embed body {
background-color: ...
}
</style>
While the actual shape of the page is of the form:
<body>
<div className="full-embed">
</div>
</body>
So the body selector never matches b/c it's not embedded in #full-embed.
You could fix this by removing the #full-embed from the injected CSS.