Commerce Line Item Field labels. No Class?

This may be redundant but I couldn't find anything related to this.

I am currently styling a product display node containing a product reference. I have added a radio button field to the line item.
The problem that I have encountered is the label for the title does not contain a class; it only contains a for=" " tag. the options contain the class .option but the heading label doesn't contain any classes.
This makes it difficult to style the heading separately from the option labels.
I would change this myself but I cannot seem to find the module responsible for this.

Any suggestions would be appreciated.