I agree with asking White Ensign for painting information on the Howe. Ask for John Snyder, he is their resident paint & camouflage expert.
But, if you write or call them right now they may be slow in getting back to you - they are getting ready for Scalemodelword at Telford. They will get back as soon as they can, however.
By your signature block I see you are in Scotland. If you are going to Telford yourself, go to the White Ensign stand and ask them directly. I think John Snyder is going to be dressed as George Patton. He usually goes dressed in his US Navy sailors suit, but I think he got a promotion. ;->