Show a custom icon for each account instead of the protocol icon

I have contacts on facebook and google talk which both uses the XMPP protocol. I want to be able to know where i am sending my messages. Especially for the contacts that are online on both fb and gtalk, the protocol icon is very confusing. I might receive a message and beacause i closed the conversation window i might reply on the other service! Also i have 2 gtalk accounts, and this is getting even more confusing.

I suggest to make an option on the accounts settings to be able to select an icon that will indicate which account i am using instead of which protocol which i believe is useless. By default this icon will be the protocol's icon so if someone wants this the old way, will not be affected.