Hi Marcel. The Ju87B was still painted in RLM02 in the cockpit, with a RLM66 instrument panel and radios. As for missing parts, have a look in the box, as there should be a small slip of paper with parts request details, and a return address. If it's not there, write to Hornby Hobbies Ltd., Margate, Kent CT9 4JX, England, UK.
Mark the top of the letter 'Airfix - missing parts', and include details of the kit name and number, the part(s) and the part number(s), stating that these parts are missing. Check the rest of the kit parts and decals for any missing or damaged items first, and include any in the letter.
This can also be done by e-mail, but I don't have the full e-mail address to hand at the moment - can get it if you need it.
You should receive replacement parts, free of charge, within a week or two.