using wpmu dev forum which is for me the best in the world.

Hello!
using wpmu dev forum which is for me the best in the world.
I see a tag that I 'like it's the tag' code '
which gives the code a pretty backgound and border.

So I want to know if it is possible how to create this kind of tag in a bbpress forum to see a nice background to the type of message.

example 1: the tag 'love' that will write a good love message and a good background and border.
<love> You know you're in love When you can not fall asleep Because reality is finally better than your dreams. </ love> in SC1

  Example 1:
Tag 'birth' to wish a good birthday massage birthday .

<birth> Joyeux Anniversaire </ birth> in SC2

and other tags ....
the principle that can be as ` and </ code> for Wpmudev.<br />
thank you`