I had the idea of a single, bright colour (orange or yellow enamel maybe) with a black 'block' logo on the down tube, keep it simple. The blue is nice too though.
I've been inspired by this 'Leeuw' from Moss. Obviously the Mercian will have the (hopefully bare) carbon front and rear ends, think this type of yellow would be a good contrast.
I had the idea of a single, bright colour (orange or yellow enamel maybe) with a black 'block' logo on the down tube, keep it simple. The blue is nice too though.