Distinguish nightworks permits from day works

It would be a great help to all users if it were possible to distinguish night work permits from day work permits. Maybe a black ring around the OOHs permit symbols to show night works? As a permit officer it can take a while to look at multiple permits all showing as traffic lights - i then have to look at each set of works to check and see if they are day or nights so i can see if permit is ok to grant. Also it would greatly help the public as they cant see the permit conditions to check the timings. This way its instantly seen if its a night work permit.