Over Under 2.5 goal odds

[trueblue2]

Just a query on the Total Goals Over / Under 2.5 goals market. If one price is on a white background then surely the other price should be on a white background too, rather than blue / purple ? One price is just the inverse of the other surely ? What I am seeing often is one price on the Overs for example that has a white background and the other price on the Unders having a blue / purple background. Surely if one price is correct statistically then the other should be too as they are head to head markets ?

What are users experiences of Backing Over/ Under 2.5 goals using Oddswizard prices and using Stakewizard to calculate stakes ?