Yes this is a problem! I have a brand new SM Viperjet ARF Plus with the Ali green color design. I have a little chip to fix on the canopy as it was damage on the shipping box. Apparently they have a new and old green.
I got both of them from SM and they don't match to my green [>:]. They absoluelty do a great job on the paint work (top notch) but I don't think they keep a track of the color formulation.... it is a shame.

I am still trying to match the green [>:]

Gonzalo