It is inherently a difficult process. Firstly, true references are very hard to come by. That makes debugging hard already. Secondly, color is not just a prop

It is inherently a difficult process. Firstly, true references are very hard to come by. That makes debugging hard already. Secondly, color is not just a property of light. The same lamp, with the same spectrum of emitted light can appear to have a different color to you depending on the surroundings. During daylight a lamp might look yellow-white, but when looking at the same lamp at night when you have your normal lamps on in your home, it could look blue. That is because your eyes 'adjust' how they see color depending on ambient conditions. This way your eyes always see a white sheet of paper as white. Instead of it looking yellow under warm light, or blue under very cold light. Things are even worse when considering the color of normal objects. The 'emitted spectrum' of an object depends on the spectrum of light that falls on the object. Take two light sources. One being 'wide spectrum' and white the other being a mix of a few wavelengths also looking white. Two objects could appear to have the same color under one lamp, but look different under the other lamp. And the above situation is also still affected by the general color of your surroundings. Hence it is quite hard to even say what 'color' an object has. Or even what color a light source has. Generally the approach is to standardize. For light that means specifying the 'color temperature' (and tint) of your ambient light. To ensure your eyes are adjusted to a known light situation. For the color of objects, if attempts are made to specify a color, it is specified under a specific broad-spectrum light source. But I believe generally they are defined as 'this mix of pigments'. This means that for objects, it is essentially impossible to take the color of an object and make a second object that has the same color, unless you know how the first object got its color.