JoomlaFCK WYSIWYG editor for Joomla!

My template uses a dark background colour and in contrasting my text class is styled to white. When editing content I cannot see my text because the editor’s background is white by defult ,how do I change this?

*** Version 1.0.x ***

Visit the back-end (administration section), go to ‘Mambots’ on the top menu bar and then clicks on ‘Site Mambots’. Scroll down and click on the ‘JoomlaFCK’, once opened you will be able define the colour property in  the parameters on the left-hand side.

*** Version 1.5.x ****

Visit the back end (administration section), go to ‘Extensions’ on the top menu bar and then clicks on ‘Plug-in Manager’.
Scroll down and click on the ‘JoomlaFCK’, once opened you will be able define the colour property in the Advanced parameters on the left-hand side.