Hello, I just installed the new version of Simple Press (I had the same problem with the previous version though), version 4.3.4.  I noticed that the background color of the top of the SPF administration is nearly the same blue as the background and you can't even see it.  For example the titles of Options, Components, User Groups are impossible to see until you hover over them with your mouse.  Just thought I would let you guys know.  Thanks.