Two small requests

Hello!

Can we have the arrows to move the materials in the material list? It helps organizing it per object.

The other thing is the default value of the colors from Color Arithmetic node. I always forget to change the Color B to white when building materials. I think it would be straightforward if both values ​​are white, so the operation is immediately shown in the viewport/VFB.

Added the sorting arrows, for the color arithmetic I think for most modes it only makes sense to make the default of Color B white for now as it’s more of a operand/multiplier.

EDIT: now that I think more about it I think I will change both defaults to white.