Yes to colour-coding: each zone has its own route colour, set when you create or edit it, which makes overlapping territories easy to tell apart on the map. Drivers aren’t assigned to a zone directly — instead, plan the zone’s route (or generate a Route Group with one route per zone) and assign a driver when you create or dispatch it. Available in both EasyRoutes for Shopify and EasyRoutes for Web.
See: Delivery Zones