Thomas & Friends: Season 2, Episode 1

2 - 1: Thomas, Percy & the Coal

Based on the story of the same name from More About Thomas the Tank Engine.Thomas brags to Percy and Toby about "how blue is the only proper colour for a really useful engine". He ends up getting trapped in a shower of coal under a coal hopper, and promptly blames an amused Percy. The two engines have a quarrel.