After reading Niranjan's blog entry on the new theme, which he has been using for a few days now at nirlog.com, I also decided to give WP-Andreas09 a try, the result of which you can see now. This is indeed a very nice and flexible theme, especially with its built in Widgets support.
Although the theme has a lot of built-in colour options (14 altogether!), I didn't like most of them. I prefer darker colours with good contrast for main content area, and somehow I didn't find any colour options exactly how I wanted them. So, I decided to tweak CSS a bit in Striped Black colour option and now I have a new background for the blog title/subtitle area. I'll probably be doing bits of tweaking here and there on this theme over the coming days and weeks to make it look like the way I want - until I get tired basically !! 🙂
But overall, I am quite happy with this theme and will probably be keeping it for a while now.