Colour coding in CRM

Colour coding in CRM

Hi
 
I have a customer field in my CRM called "Traffic Light". It is a drop-down with the following options:
Red
Amber
Green
 
Is there a way of making either the background or the text of the field a certain colour depending on what option is chosen, i.e. red text or background to field if "Red" is the chosen option?
 
I am using the Free option of CRM at the moment.
 
Rgds
CK