Identifying quarters by colour for contents

e.g. Quarterly Vert and Azure in the verta Portcullis Or in the azure a Lymphad

Alternatively...

Quarterly Vert and Azure in the former a Portcullis Or in the latter a Lymphad

This is probably quite tricky to implement, especially error handling...? Former / latter is probably OK, but would this construction also then apply to an two-colout division? That would be quite a bit of work...