Golden refers to a style of rum, although it’s quite loose as a genre given there are no official regulations around it.
Some gold rums see the inside of a barrel for a few months or years, but many are simply white rums dyed with additives. Because of that most producers who bottle aged rum without colouring refer to their products simply as aged rum and typically, you can expect a Golden Rum to derive its hue is from colouring and /or contain extracts of some kind.