I painted my rocket,
I used Vertex Paint,
I unwraped, and I saw all the color I painted.
Now I checked the Vertex Paint Box.
And I click F12 to render the image, and it’s in black and white.
How do I render it so I can see the colors?
I wrote that, and I already did that… it didn’t help 
it works 100% perfectly for me, just tested and still renders vertex paint. Attach your blend file to your post so other users chan checkit out.