An Add Attribute button is provided for some V-Ray materials. You can select additional attributes that can add up to the appearance of the material.
Anchor
AddAttributeIcon
AddAttributeIcon
UI Text Box
type
tip
Holding down Ctrl while having the Add Attribute menu open, allows selecting multiple entries without closing the dropdown.
Column
width
5%
Column
width
50%
Image RemovedImage Added
...
Section
Column
width
45%
The context options of the Color Slot allow to Copy and Paste a color from one color slot to another, as well as to Reset the color selection to a default value.