Hello Sarah
yes thats possible.
Just reformat your styles brought with SAP ( fill, fontsize, fonttype etc.)
Then goto Styles in Analysis tab ans select save style.
That will save all settings in styles like colors etc in the style you may call MY_STYLE.
In case you select the default check box, it will be reapplied everytime you use the style.
The styles will be saved as XML underneath your user app data and can be send to colleagues as well.
hope that helps
Joerg Boeke