let's do a bit of cross-referencing here....let me see....because...my sixth sense is telling me that the following has a connection to ena's desk, let us say....petrol nell didn't know ena's configuration...which was to exasperate McGowan....

 

...although i might be wrong...considering there are far more colours 'at work' here....let's have a look for something more multi-coloured....what about the following:

 

ha ha ha..."got him" as gill would say...CF's desk...it's even got 'owl eyes' in the middle...go figure: