You can easily add new colour options to your existing raw materials
Select the Raw Material ID
From the Variants tab, click [+ New Variant]
Existing colour options are shown the left hand side
Enter the required details for the new Variant/Colour and click [Save]
N.B. Enter your colour name first then the supplier reference.
The new Colour is now showing in your list of Variants
Switching between variants autosaves data entered