Here's what we bought:
The yellow one supposedly grows to 20 feet. All the red ones had significantly less height. This particular one said 8 to 12 feet. That's enough to go up the pergola wall but not up over the roof. I guess we'll be counting on the yellow to take over.
The yellow in bloom. I love the firework explosion of the flower!
Here's what the pergola is looking like these days. The nearby garden is filling out and we've added a picnic table, a gliding bench, and some other furniture. We've gotten quite a bit of use out of it already this summer!