The colour was actually meant to be a lot darker and "less green" than it appears on the images. However, given the time we had before this audition we only had two layers of paint to test with in order to not get a sticky wet or soft paint. The colour will be changes to a colour closer to black with less green saturation. The glass fixing points will be black anodized.
I am working on a second set of Gaia. They will be more brown and less red in their wood. The aluminium parts will be silver anodized and the front horn will be pure black or a very dark gray.
There are pretty much no limitations to what can be done to colour, material and surface finish on these speakers. You can make an all Ferrari red version, a pearl white/silver, an all black piano and so on. It is also possible to do design tweaks like different enclosure contour, spacers between the parts, lifted foot, no end protection on the glasses, art type glasses, hand painted graphic, leather covered parts, Corian parts, stone parts... well, fantasy is pretty much the only limitation.