@bascb – I reckon a throwback to the Yardley livery would work very well. It’s made up of thee colours, all of which work well for McLaren and their partners.
Firstly, there is the white, which has always been Honda’s major colour (except in 2007).
Secondly, there is the red, which has been used as a secondary colour for Honda (as a “rising sun”), and is the major colour of Claro, who have been tipped as McLaren’s new title sponsor.
And finally, there is orange, which is a McLaren colour – but it keeps the orange to a minimum, preventing it from clashing with sponsor colours.