[TYPO3-RTE] adding new headline types with classes

[media.res | Alex Widschwendter]

hi all,

i like to add a new headline do the heading selector in the rte. i need 
this to achieve the following:

i need the normal h1 tag AND a h1 tag with an additional class -> <h1 
class="blue">my text</h1>

has anybody some experience in achieving this requirement, or could tell 
me if searchengines thread <h1><span class="blue">my text</span></h1> 
the same as the above mentioned combination?

tia and a nice weekend!

alex