On the Howto geek site I read this article:
Are you looking for an easy way to tweak the settings for Unity 2D on your Ubuntu 11.04 system? Then we have the perfect app to share with you. Mariano Chavero has created a simple, easy to use GUI app that will let you tweak Unity 2D’s settings in just moments.
To get started download the appropriate version for your computer (32 or 64 bit) and install the .deb file using the Ubuntu Software Center.
Once the installation has been completed just do a quick search by entering “2D” to find and launch the app. Make any desired changes and close the window when done…the changes are automatically applied.
Mariano has also listed some odd problems that you may experience while using this app and the work-arounds for them.