Why doesn´t the texture change colour?

[LARV]

I´m sitting here trying random stuff to learn Vray and Sketchup better.

In the attached image I have set a texture to part of a surface of some weird sandbox shape that I created. Then I changed the colour of this smaller part of the texture from the default grey to red with the colour wheel. Everything looks just like it should in Sketchup, but when I render it the colour is still grey, not the set red. Why is that?

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[dkendig]

That should be working with the latest service release...