When selecting team color, type any of the following "Codes" and press Enter. If done correctly, you will hear a click.

Code Result 

worker928 Buy Workers Any Time 
pickup036 Pickup Enemy Beacons 
weapons563 Buy Weapons for Gangsters 
tenants458 Select Tenants Any Time 
loans458 Borrow Any Amount from Bank 
estates216 Buy an Estate Without Conditions 
maps029 Choose Any Mission 
houses426 Select Any Building 
build830 Buildings Appear Directly 
upgrade934 Work on House Immediately 
speed364 Speed Up Network Games