[TYPO3-RTE] howto config RTE for right content

[Arnold Gordijn]

Hi I have been looking for hours to set the htmlarea to use a other 
background when editing the right colum.

tryed like this
RTE.config.tt_content.colPos.types {
  2.mainStyleOverride (
    body.htmlarea-content-body {
    background-color : green;
    border: 1px black solid;
    }
   )
  }
As I understand the doc's it sould do something when table tt_content 
field = colPos has the value of 2

it works if for all colums if i do this
RTE.config.tt_content.bodytext.types {
  text.mainStyleOverride (
    body.htmlarea-content-body {
    background-color : green;
    border: 1px black solid;
    }
   )
  }
but than all cols are affected.....