Choose a device:

construction, buildingqty: 1primary

More specific:

dome qty: 1primary

Choose basic color of device:

goldconstruction, buildingqty: 1primary

grayconstruction, buildingqty: 1primary

whiteconstruction, buildingqty: 1primary

Combined flag identification

by main colors

very dark bluedark red+ other

by device on the flag

construction, buildingqty: 1primary