After celebrating the centennial in 1998, FC Thun redesigned its logo, and used this emblem until 2010. There are actually two versions of the same red and white logo: one design uses details in yellow and the other one details in green (s. football). I've seen memorabilia from 1999 and from 2010 - both with yellow elements. Honestly I have no idea, why and when they started to use a red-white-green logo. This pin seems to be an inofficial item (size: 1,5 x 2,2 cm).