Select an 'html pen' to compose an email.

For the same reasons as those stated in #264: Coloring quoted text when composing mail, I compose an HTML email wishing my insertions in between quotes to be of a specific color.

As it is right now, I must colorify each inserted paragraph to make them look like what I want. It is a painstaking approach.

It would feel much more natural to select a (pre-set) "pen", just like I would pick up a colored pen on my desk to hand-write a letter, and wherever I write (wherever I insert text in between quotes), the text would look like it had been written by the same "pen".

This "pen" concept should really be implemented in any application that has a rich text editing context (libreoffice, koffice, etc.).