text colors not compling to the label color in thumbnail vie

Hi,
I´m using Windows Vista (32bit) and Win7 (64bit). While in Expression Media the text color follows the label color in thumbnail view, in MediaPro the text is always white, independent from the choosen label color.

In the tutorial videos it seems, in Mac-version, the text color complies to the label color.

Is it a bug in the Win-version or is there an option anywhere ?

Thanks Tobias