As the video shows much clearer, there is plenty of labeling. The original designs were based on the type of breadboard you linked to, we worked with many well known users here such as Westfw and Retrolefty, that helped debug our designs and evolve our later designs into the unit you see now, to eliminate the very ratsnest of wires you are discussing, the crossover problem.
You are correct it is not the standard red and black or red and blue, it is designed to be a just what you need solution that can grow with you and the modular nature allows you to expand it any way you want.
It may not be for you, if you are used to experimenting in only one way, but it is sort of a swiss army knife solution, that can be configured for people that want new ways and formats that can grow with them.
With the two external rails being able to carry anything you could choose to put on them, by a simple jumper configuration whether it is gnd, 3.3 or 5 volt, supplied by the built in regulated power supply, you could just as easily place anything up to around 20 volts on the rail of your choice, the modular system allows for complete isolation of the two existing rails.
I have added a better version of the pinout labeling to the set, hope that makes it clearer for you.
You can easily add an inexpensive secondary rail (about a dollar) as I described, but in addition, because all of the standard power pins are available in the center it is easy to choose exactly which side of the board you want any of the power to be, no crossing over or back and forth, no extra rails needed thats the advantage of having a center inline Arduino built right in.
Those power pins are also isolatable so larger amperage can be routed to those pins if you need to exceed the standard 1 amp supplied by the built in regulated power supply.
You don't need two rails on the side or to crossover because with the center power you essentially have two fully configurable power sources on each side of the board, the left power rail and the center inline power for the left side of the breadboard and the right power rail and center inline power for the right.
The goals were to find a balance between New User Easy and End User Friendly, eliminate as much confusion for teaching and experimentation by keeping down the need for additional wires( as in your crossover process ), while maintaining shield and library compatibility and eliminating the dreaded bump and pull circuit separation, and we brought all that stability and new feature sets at less cost than an Arduino, a plastic mounting plate such as this Plastic mounting plate for breadboard and Arduino - rubber feet! : ID 275 : $5.00 : Adafruit Industries, Unique & fun DIY electronics and kits and the breadboard that you listed combined.
Thank you Michael again for your suggestions, for some it is the right tool for Arduino Power Users, Educators and New Experimenters alike.
Be sure to check out http://kck.st/WbiSck for full information.