It's an entirely different skill, to be sure. Not to mention, colours don't particularly work like that. If you used the exact same colour of paint on two different mediums then they'd look two different shades. Two different types of canvas would be enough to see the effect. Once you start talking about a transition from 2D to 3D, you're in a totally different ballpark. When you customise a figure, it's easier. You can use multiple coats, fine tuning the colour as you go, and there are a lot of techniques you can employ to give flat colours more life, bring them closer to the ideal colour palette. For manufacture, it's a more laborious process. You make pantone colour choices for the plastics, any paint apps, etc. and then send those off to the factory and wait for a prototype. And it's unlikely the prototype will be using the full production-level setup yet, so you make some tweaks knowing full well that when the first test shot comes back you'll have to refine it again, and again... and the back-and-forth can be costly and time-consuming. At some point you get something where the colours are close enough and you go for it. Obviously HasTak have an advantage in infrastructure which gives them a massive leg up in the colouring game but even they don't get it spot on (often)! Edit: And I haven't even mentioned photography (and lighting) which rarely captures exactly how a figure looks in hand!