Hello. I am playing with the Dark Blue theme 2013011201 with Moodle 2.4.1+ and no customisations. Overall I haven't encountered any issues. However there's one small problem I think I've found, which I wanted to check is a buglet rather than me doing something wrong.
On the front page I have courses within categories shown. This format does not show the course summary just its title, but with Dark Blue it offers a round light blue information icon with a hint/tooltip of "Summary". If you click on this a popup window appears using ...../course/info.php?id=????? where "?????" is the course number, but the page is blank apart from one strip of colour across the top. If I use say "Formal White" instead the popup has the correct content. Buglet? If so how do I report a theme issue?