I know that to change the customer logo in the top-left corner of the screen you need to go into Setup -> Create -> Apps.
However I am unable to find a reference to this in my Apex class. The prefix for the 'Apps' object is '02u' but there is no 'Apps' object in the Schema in Eclipse. Likewise, I can't see it among the Static Resources. There is an 'applications' folder in the metadata but this just contains label and tab names.
I am aware that the logo depends on the current user but is there no place where all the customer logos are stored so that I can access them?