Windows Vista themes are not applying properly...

I had a problem in getting my default Windows Vista themes back, due to some reason. When I look at my personalization option under control panel. I am getting this for Themes options.

After several analysis, I found that Themes are managed as separate service in Vista. When I checked the same in the service I found that Themes service is Disables/Stopped. Once I started the themes service in my laptop, I got all my default Vista style themes back working fine.

Hope this helps some...