Here’s a Visual Guide on How to change the Default Theme in Orkut.
Log into your Orkut Profile and look for the change theme option towards the top right of the window
Click on the change theme option, this should open the Edit profile window for themes, you can also access this option by going to Profile –> Edit profile and clicking on the Themes tab there.
click on a theme that you want and click on the update option present towards the bottom left of the page and you are done.
Here’s how your profile would look like if you have chosen the Bus Stop theme.Like what you see, Subscribe to my feed in a reader. Don't know what a feed reader is then check out this Excellent Video.