a DW question

When people do quotations from other sources in DW, the words show up in a black block with white writing. If I look at this black box long enough to read the writing, when I look away again, I get an afterimage that lasts approximately as long as it took to read the quotation. For long quotations, this is really annoying.

Is there a way to keep DW from putting quotations in white letters on a black background?

Thanks!