1930, for the first WC
Didn't they wear blue for the early World Cups? I'd guess 1950 maybe?
I'm pretty sure Brasil had the yellow by 1958. The loss in 1950 was pretty cathartic so perhaps soon after then, say 1951, with 1954 as first world cup.
Spurs
Reading
WBA
Everton
?
EDIT: Saudi Sportswashing Machine, oh dear
From the bottom up, my guesses are
QPR
Saints
Villa
Sunderland
six.
beckham, seaman, may, platt, silva... aaand does batty count for blackburn?
Are David's the most prolific league winners?
Are David's the most prolific league winners?