Found a bug. This doesn’t properly blur out the image, but does with the official spoiler plugin:
[spoiler]<img src="..." />[/spoiler]
This does:
[spoiler]
<img src="..." />
[/spoiler]
I would appreciate a way to enable/disable individual BBCodes, we want mainly the color one (…for an in-joke of sorts…), but don’t want the typeface ones or the hide one.