Painting
It is much easier to paint your model before construction.
The two roof panels, the roof edge strips, four “roller” doors
and all the outer frames were all removed from their sprues
and sprayed white using a car undercoat aerosol spray.
Once dry, the roller doors had their bottom strip painted with
red and yellow diagonal stripes using model paints.
The walls were sprayed with a red-oxide car undercoat aerosol
spray.
Once dry, the window frames and side doors were picked out
using white model paint.
Connectors and bracers were left unpainted.
After construction any edges can be tidied up using model paint.