What was the first children's TV series commissioned by the BBC (British Broadcasting Corporation) that was in colour?

Camberwick Green is a British children's television series that ran from January to March of 1966 on BBC1, featuring stop motion puppets. Camberwick Green is the first in the Trumptonshire trilogy, which also includes Trumpton and Chigley.

Camberwick Green was the first series of what turned out to be a trilogy. Gordon Murray left the BBC in 1964 to produce the series himself at his own cost (it was one of the first BBC independently produced commisions). The first episode was shot in black and white and then re-shot in colour as it was thought this would future-proof it - an expensive decison at the time, given that colour television was still only on the distant horizon for most of the population. Consequently, it became the first childrens tv show made in colour.