Well, I should have seen that coming and asked earlier but would you mind telling me how it would work with changing the individual label background color. I tried doing it but didn't really figure it out.
Oh. Is that what you meant by "headers"? In the rare case that you are using a data tag which does not have a source template parameter, then you will need to do as CrazyForMyself posted. However, if the target label belongs to a data tag that does have a source (which most likely it does), the you can just use the source attribute instead of adding a name attribute to the data tag.