Most users like to customize the look of their browser for a variety of reasons, such as making it match the OS theme installed on their PC or simply to get it to look more colorful or artistic. Those from the former category first need to find the desktop theme they like best, then search for a similar one on their browser.
Users who own an Alienware laptop and who choose to go with the default OS theme can also personalize Firefox using Alienware Invader.
If you want to try out Alienware Invader, you first need to download the file, then drag and drop it over the Add-ons window (which can be launched after accessing the Tools menu). The final step is to restart your browser and you are done.
Once you run Firefox once more, you should notice that the default navigation buttons have been replaced with custom ones, inspired by the well-known Alienware look.
A theme for older Firefox versions
It needs to be emphasized that the theme can only be installed on older browser versions, namely those ranging between 3.0 - 3.7a2pre.
In other words, if you are running the latest version of your browser, you should probably skip this theme and look for one that is compatible. After all, it is more important to use an up-to-date version of Firefox that has all detected vulnerabilities or security flaws patched up and fixed rather than have a good-looking one.
To wrap it up, Alienware Invader can come across as a suitable Firefox theme for all users who are proud of their Alienware laptop and want to show it off.
However, since it can only be installed on old browser versions, users are advised to look for other theme that are compatible with their updated Firefox.