You can change the interface of your Firefox browser just by using a firefox plugin called Anycolor. You won’t need to install new themes and throwaway the old ones. Anycolor lets you customize the whole appearance of Firefox all by yourself.
The layout of Gmail may sometimes bore you when you see it for days together. Don’t panic, you can customize it. Here’s how you give some style to your Gmail.
Greasemonkey is an extension for Mozilla Firefox that allows users to write scripts that change the functionality of a webpage. A website can be made more interactive with Greasemonkey. One can also interconnect two sites to integrate the information from both sites.