Could use paint.
Some candles too.
This menorah dug up looks tree-like, but I was not aware, till moments ago doing some internet searching, the history of menorahs, and how related symbolically to trees that they are.
May well have been painted. Most ancient statues and other carvings that just look white to us today were actually brightly painted. Biblical Archeology Review a few issues ago had a stunning full color reproduction of what the Arch of Titus looked like when it was first unveiled.