A gold planter is an accent, not a scheme. One at an entrance, either side of a doorway, or against a dark wall in a lobby does the work; a row of them competes with itself.
The reason to take the metallic look in fiberglass rather than in metal is straightforward, and Jay Scotts say it themselves when they compare the materials: metal “is usually lightweight, but prone to rust and dings.” A sprayed metallic on a composite shell has neither problem. It will not corrode at the base where water sits, and a knock from a trolley or a chair leg does not leave a permanent dent in it.
It is a gloss finish, so it reflects. That is the point of it, but it also means it shows fingerprints and water spotting more readily than a matte, and it wants a wipe down more often if it is somewhere people touch it. Related: indoor planters, bowl planters and black planters.