Aloha
You might want to take a look here:
http://www.warbirdart.demon.co.uk/jonzon27.html
or here:
http://www.warbirdart.demon.co.uk/julius.html
or here:
http://www.warbirdart.demon.co.uk/bechoes.html
Pictures of the pilot in 1979 and 2002 signing a canvas painting about his crash on 18-08-1940. The site mentions yellow 6 was a borrowed plane. A picture of his normal plane, yellow 3 is also on that site. It should be yellow 3 in wich he shot down a Fokker (G1 or T5) above Rotterdam Waalhaven in may 1940.
Don't know the pilot is still alive, he was in 2002, think the owner/builder of the site can tell you more
groeten van de Foute Man