[link]I found the Russian cover of The Darkest Hour here:
[link]Light yellow/dirty yellow, yes? X'3 And it also shows his LEFT paw is the white paw, not his right. (even though you can't see it, his right paw is still black)
And, of course, Cats of the Clans illustrated Scourge and Bone with yellow collars as well.
[link]Yes, I do know that Cats of the Clans has SOME inaccurate art, but it does NOT, i repeat, NOT have
ALL inaccurate drawings. It is OFFICIAL art, all of them are OFFICIAL.
You may be thinking, "but Erin Hunter described Scourge with a purple collar!" that's true, but she also described Tigerstar as a she-cat once. So you can stop talking now.
I've been searching all over for that art, and i finally found it. xD i just wanted to share it with you.

Scourge would look awesome in a yellow collar
Ah man, I would have loved to see that. XD
That like..ruined my impression of Tigerstar..
at first i drew it purple, and then I turned it light yellow. after that i colored spots of blood on his collar so it was red. XD
but EVERY SHOT i should have changed the coloring xD then nobody would complain, yay