Heck Lee, that looks marvellous! Well done mate! As you haven't yet glued the panel, if you can, paint the compass barrel mid grey, about Medium Sea Grey is close enough. This will make it stand out, and make the finished cockpit look even more detailed than it already is. Also, the grip part of the control column was wrapped in a rubber material (the grip was made by Dunlop !), so if you can add a coat of gloss or semi-matt clear varnish, this will provide a nice contrast. I have to say, the kit parts look rather good - I like the way they've replicated the curve of the bottom of the cockpit fuselage section.
BTW, I know it's a bit of a distance from you, but rochie and I will be staying at Great Dunmow next Wednesday night, if you fancy a pint or six!!?
Edit: Just noticed, the voltage regulators, the two cylinders on the back of the pilot's head armour frame, were silver, on a black mount, in case you missed them!