Thanks luro for your helpful hint.
But since I look at and compare the colors of the reference photo with the color samples of the Valejo colors on the same screen, the supposed color error should always be the same and therefore negligible.
I think that one has to find a suitable compromise to achieve a satisfactory result, since there are too many factors, from the lighting conditions of the pics, to the distance from the camera to the object, to the monitor settings, and so on ...
I think it will be important, that the ET should have no uniform color, but a smooth color shading, and all this should finally fit to the flour stripe texture, what's still going to be pretty exciting.
