This if statement is doing a job similar to StyleNormalizer. I'm wondering about the relationship between the new way styles will be handled and the job that StyleNormalizer does. Perhaps a StyleNormalizer class won't be needed. I could give `Common::Style` a `style_normalizer` method that checks if a style needs to be run through pattern (i.e. is fill or stroke) and then runs it through first. 

Not sure . . .