Here is one possibility for you. The gold color is representative of possibly metallic gold plate. The 3 columns can be 4 also and representative of cylinders with 3 dimensional application. Black would be high gloss to reflect light. Westheimer could be the same black also. This is to draw quick attention and not be missed in busy traffic. The metal would catch sunlight, but may need to be brushed metal depending on the direction the building faces to avoid blinding sun reflection.