Blog Customising

I had some problems trying to customise my blog. I used THIS site in order to get a themed blog template. I wanted it to look quite dark and spooky, perhaps with some shadows and to use the colour red to symbolise blood (signifiers of the Thriller genre). However, there were a few issues e.g. loosing the tool bar at the top of the screen, and I ended up having to redo some of my lists and had to go to a lot of bother to get my blog back to looking normal.....so just as a word of warning, don't use that site. It's not worth the hassle.