In HTML/CSS you can define a style which can be applied to many types of elements, e.g.:
.highlight { color:red; }
can be applied to bo
I think both of these methods of declaring a style might answer your question. In the first one, there is no TargetType specified, but the property names are prefixed with 'Label'. In the second one, the style is created for Label objects.
Another method to do it is: