Here's the check I mentioned.  propertyDefault was formerly always returning an invalid valuie, so we always wrote the style tag.  The new Text::propertyDefault will return good values for for most text types, so if we uncomment this line, we'll start omitting "style" tags for most text elements (any elements where we did not explicitly change the style).  This should be fine, but I expect it would break an awful lot of tests, and might have unintended consequences.