Honestly, I kind of hope they don’t. It’s not a bad colour on its own, but it’s going to be really difficult to mactch it with a sponsor’s colour and make the livery look good.
If McLaren really have their heart set on an orange design, then they should probably make a throwback to the Yardley livery and keep the orange to a minimum:
That would line up nicely with Honda’s (rumoured) re-entry into Formula 1; they’ve traditionally run white liveries like on the RA272:
And as if that wasn’t enough, Honda have also included a red circle in their designs, since they’re a Japanese company. That works very nicely with Claro’s logo, a red circle:
And Claro are already sponsoring McLaren (their name was on the back side of the MP4-28′s rear wing in Spain, in place of the Tooned logo), and are said to be looking at a major sponsorship deal next year.