On a solenoid valce as this, the hot and neutral valves can go to either terminal, as long as each valve gets one of each.
If I read Rober't instructions correctly here it is re-phrased:
Take the wire that is ONE color and stick it, as directed, to the proper temperature valve.
Take the other ONE color wire and stick it on the other temperature valve.
The wire that is both colors needs to go to the two remainig terminals(one on each temperature valve). Here you will need to make a "jumper" or splice the wire into two needed connections.
If the temps are wrong later,(which they should not be), simply reverse the incoming water hoses, if that is easier than electrical work for you.
Sorry, I hope I haven't confused you!!!
I am confident you will do this to perfection!