I am working with two different companies - I would like the background colors to be different to make it easier to identify which company is which.  I know how to change the colors of the invoices, cheques receipts etc, but can't seem to figure out how to change the main border colors of the home page etc.  Can you plse assist?  Thanks Carol 

That feature was taken out of Simply several years ago because it used a significant amount of memory.

An alternative would be to go to Setup>User Preferences>View> and put a check mark in the box beside 'Show Company Name in Status Bars' (this box is at the top of the lower section of the right hand panel.)

 Thanks Brent

-- the company names are already in the top bar. It would have made life s much easier if we could change the colors though.  Thanks!