@mustansirbillahasada
Yes, for these rubber parts, visit Sagheer Centre, you will see many persons selling customized rubber on spot.
1 thing, in my car, painter also do this red astar zinc oxide/red oxide treatment also in space of under handles and under roof rail rubbers, both areas seems white/gray means no astar.
Anyways, now its the time to start recommending denter/painter for finishing your car ASAP.
It seems he has started multiple cars simultaneously so giving less attention to your car.