New tool to select a color and create a material and also to set as active a material using the sample color.
We have these main targets:
- Create new materials sampling any color in viewport.
- Select Materials using sample color (material).
Also, we need a way to disable any effect or modifier that changes the "real" color or use a solution that uses the internal real color. According to Brecht, thi could be done using the selection code and an unique material ID.