Hey devgm
The problem very likely is that the module is set to use its own css style you can change that however and create your own. I believe the setting is under the advanced section in the module and called use module css. if you disable it you can create new css syles for the module in your template css file. The other thing you can do is just modify the style within the module itself. (i try to avoid that in case i update the module which could make me lose my modifications... regretably that has happened a few times
but i learned from it)
To create custom versions just copy the module css as it is created then give the module you try to style a unique suffix which should create: moduletable_yoursuffix
Then you copy the normal style into your css file or duplicate it in the same css file and put it .moduletable_yousuffix before each item. That way the browser will interpret anything within .moduletable_yoursuffix with your modified css code and not the standard one provided.
Hope that helps
Phil