Add White to the Canvas color list

Experienced users know how to change the Canvas color (with the right click).

Always wondered, why don't we have White in the list? Yep, we can choose it as a Custom color.

But it must be in the list by default as a basic color, IMHO.

If we need to check our document on another color, we'll have to make extra clicks after that to bring back White again. It's a waste of time.