In Virb Edit, some of the text is black, on a dark grey background. This means it is very difficult to read.
eg the names of the videos on the main screen (Video gallery), or the titles of the clips in the clip library.
I'm using Windows 7, with the "Windows Classic" theme. I don't think I've adjusted any of the colours. It looks just like the screenshot posted by PA3FBO.
Just testing it now, it seems the Aero themes have white text, but the basic or high contrast themes have black text.