Hi, I have developed this kind of 3d printer many years ago, and it's a little bit like ZCORP (which was acquired by 3d systems), the 3d printer use same hp11 printhead as zp510, speak frankly, your budget is too low, and the common stl file can't support color information :), there have similar binders and powers as 3d systems in China, if you build the 3d printer as open source, it may possible, but the printhead is no longer produce.