Vertex Color Viewport display 2.8

Hi,

I’ve noticed that between Object mode and Vertex Paint mode, Vertex colours don’t quite match up.

Here is an example of Vertex Paint Mode:

And Object mode using emission/shadeless to preview Col Attribute

I did notice there was a setting for Vertex Paint Opacity in the Viewport Overlays dialog when in Vertex Paint mode. However is this the correct preview? Ideally should this be set to 0 as I see a closer representation of my colours.

Just need some clarification