There aren't many full-size MX green keyboards out there, but MK.com has the
Vortex PFCN6800 in stock, which is cheaper than the CODE. Don't get me wrong, the CODE is a really nice keyboard - I use the brown switch model at home.
If you want something "RGB," you can buy these
color changer tabs from Massdrop. It's a bit of a ghetto solution, but it at least partially addresses your desire for multi-colored backlighting. Be aware, though, because the tabs are opaque, the LED lighting will be dimmed somewhat.
The stock CODE keycaps are fine for what they are. The main problem with the material used is that the legends will eventually wear off after prolonged use. You can replace the keycaps with pretty much any standard set, but most will compromise the backlighting. There exists a backlight-compatible set of caps made of PBT plastic, which is more durable (and many will say better feeling). They come up for sale on Massdrop occasionally, so it might be worth your while to sign up for their email alerts. In the meantime, you could pick up a set of these
Doubleshot PBT caps in white/blue, which would allow the lights to show more clearly. Now if you have little or no intention of ever using the backlight, well, your options for keycaps will open exponentially.
One thing to be aware of with the CODE is that most of the keys with stabilizers (backspace, enter, both shifts) can suffer from a combination of rattling and/or squeaking. You can fix this yourself by lubricating several parts of those keys with
silicone grease, applied with a Q-tip or small paintbrush. There are guides on Youtube that show you what you need to do. It took about 30 minutes to do mine, and it made all the difference; the keys sound better and feel much more smooth.
