Blackosx_Revenge_of_the_Big_Screen_2012

The logo.png file here is currently 1920 pixels wide. You will need to change it to match the width of your screen.

I recommend you use the iResize app to squash this file's WIDTH to the screen size Chameleon uses for your themes.
You can find a link to download the iResizer app from the Resizing Themes Post - http://tinyurl.com/6kyle7y

So for example, if you are using a display resolution of 1680 pixels wide then you will want to change the iResizer apps 'Settings' tab to read as shown in the pic below: 

Note - UNCHECK the Proportional Box

¬

This should work for you.

:)