Asus VN248 difference in colour

[Cavallino]

Hello folks.
So I setup two of the 3 panels and noticed that one of the panels has a slightly more "red" effect to white background compared to the other. (E.g. Google webpage).

Its difficult to capture by phone but please refer to the below.

Is this an RMA or just a luck of the draw?

 

[Cavallino]

Here is another picture but this time setting colour settings on both panels to warm.

I think the difference is noticeable? Is this a fault which can be RMA'd?

 

[Stas823]

The warm picture looks the same to me