Whenever I am in vertex paint I can see the color but then when I go back into object mode or anywhere else the colors disappear. It's about four mins into the Tree Material Video for the 3D Stylized Forest that I start having problems.
I have to be in solid view and vertex paint mode to see the color.
Did you enable it in the Viewport Shading dropdown:
Btw this will be called Attribute in 3.2, which is scheduled to be released June 8th already.
I thought I had....but maybe it needed to be done in object mode cuz it worked this time. Thank you =)