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 cable cables dangerous electric electricity insulator pole poles railway train voltage wire wires wiring altitude boulder colorado flower montane mountain natural nature plant rock Rocky Mountains usa wild