Regarding color samples, I could produce a one-off in every color option if I had a few thousand dollars sitting around. Unfortunately, that is not the case, especially considering the paper thin profit margins to achieve the price tag.
The color table in the KBDfans product page reflects the Pantone swatches that will be used for color matching. Obviously, there will be variations due to monitor color calibration, lighting, physical material differences, ano batch variations, and such. If you need an exact color match, I highly, highly discourage you from buying this product. Just don't; you'll be disappointed and it will be a waste of your money.
We will try to order further ano samples, but the reality is that it is extremely straining on factory relations after doing 7 rounds of prototyping. Doing one-offs is extremely unprofitable for the factory, and each attempt makes the workers unhappy.
Kevinplus is currently learning how to use more advanced rendering software to produce more realistic renders. Renders made through this may be a better representation of the color options than the 2D color chart; however, learning is not something done in a single day, so it will take some time before they appear.