office buildings in different color variations

blue buildings color colored coloured colours companies company dark different door doors entrance entrances facilities gray green houses icon icons image industrial industries light office offices orange place places roof roofs set sets six tree variations vector vegetation window windows working yellow glow hue intensity chroma chromaticity chromatism coloration coloring dye iridescence luminosity pigmentation pigment saturation tinct tint undertone value chromism colorant polychromasia high rise superstructure skyscraper exit gate entry entryway gateway portal opening ingress tower botanical botanically botanics