Whilst adding a simple signature to Gmail is actually quite simple, if you start going into the realms of HTML/Rich Text signatures or something with a little more colour this then becomes even more complex with Gmail. Unfortunately you cannot paste in HTML code to get HTML looking signatures like below but with a clever hack that I am going to show you can get a signature as per below. 'HTML' looking signature: vs Plain Text signature: I am sure you agree the colourful one a