No, That image looks wrong to me. The Bell standard reverses all the colors from one end to the other.
It will be easier if you number the slots on the RJ-11 plug the same whether they have a pin in them or not. 1-6. A 4 conductor cord uses pins 2,3,4,5 of that 6 position plug.
What you want is 2 to 5, 3 to 4, 4 to 3, and 5 to 2.