Bootswatch calls it Lumen. The bootstrap theme dropdown in AS IDE calls it Lumin. And in the BS4 dist folder of AS, there’s Lumin and Lumen css files. I assume this needs cleaning up too.
I should have finished comparing …
Litera is missing from the drop down, but the CSS file exists. And it’s on Bootswatch.
There are two themes in the drop down - paper and readable - which are not on Bootswatch, nor are there any CSS files that appear to be for these themes in the dist folder.
sketchy is also missing from the dropdown. Will be fixed in next build.
Fixed in 8.0.3.