angles appearances architectural architecture box-like buildings business district city city scapes city views color colored colors colour coloured colours contemporary contrast contrasting distance distant elements exterior external glass heights high high-rise Hong Kong light linear lines modern office buildings perspectives rectangles rectangular reflections skyscrapers views walls wealth windows architectural elements black interior lighting reflective steel tinted high rise CBD concrete dark shade shady-side Singapore black & white business-district city-scapes city-views distinctive gray grey greyscale monotone office-buildings offices style background big blue bright building business cityscape cloud clouds construction corporate design District downtown facade financial futuristic house landmark large metropolis mirror New office perspective reflect reflection shiny sky skyline skyscraper street structure tall technology tower town travel urban vacation view window workplace abstract angled commercial commercial-city-building geometric geometric-shapes panelling panels patterned patterns shapes surface textured textures unusual