After just experiencing this last night, while wiring up my other controller, I think basically what they’re saying is - don’t trust the color codes on the wires, as they don’t match those coming off the motor (if you look at the motor reference specs).
In the end, it’s all quite easy to fix, if you do goof, simply swap any pair of coil wires. You can check which pairs of wires are in the same coil with an ohm meter. Any two wires that have a measurable resistance across them - belong to the same pair. When wiring up, if the motor moves in the wrong direction, simply swap any pair of wires to reverse the direction.