I've learned since making this that you can alter the appearance of the whole tabletop using the /lighting command. My impression is that it is a nice feature, and a good way to make quick changes, but it can do odd things to text and in general just cause havoc with contrast. The built in red (campfire) and night daylight mood settings and up being a kind of pale red and relatively nice blue with this theme, but if you want some random color you'd need to play with the "/lighting HEXRGB" command