All of their hilts are anodized. A decent DIY anodizing setup is $450+. So, you can certainly buy an empty silver hilt and make it whatever color you want. Then send it back for electronics, or of course, do that yourself as well. There's easily enough information here in the forums to do it, including all the wiring diagrams you'll ever need.
You can always have another crew fo the custom sabers and have the original crew do the sabers that are listed on the website then it would be somewhat smooth and everything will get out on time
Yes. And have to raise prices to be able to pay for the extra crew.
US's business is based on four things: Quality, very fast turn around time, reasonable prices, and excellent customer service. Unless there is equal or greater demand for the custom colors as there is for the standard offerings, then their prices on all products would have to be increased. So two of the four cornerstones of US's business model, price and turn time, would be compromised.
Plus, they're under A LOT of water, so I think their focus is definitely elsewhere at the moment.