I have to agree with Aus and unfortunately be a party pooper too.
When breeding anything, its imperative, no mandatory to do mountains of research before hand. Breeding is something that takes a lot of time, dedication and costs a fair bit of money. Just because someone else does it and it looks like fun doesn't automatically make it okay for you to do it too.
Think before you bring a bunch of fish into this world who are ultumately going to suffer and rot in their own filth at someones hand, a someone who knowns next to nothing about betta care. Because chances are, that's where they will wind up. In a vase, a .25 gallon bowl, or worse, as someone's sick idea of a decoration for a wedding.
Think before you go and do something you have absolutely know idea about doing. If you truely want to breed fish, and I mean breed them to better their form, color, or health, then talk to experienced breeders, watch what they do, learn from them. Chances are, they were novices too and they might have valuable knowledge they have gained from their experience that is not in any text book or website. Ask them about a million questions and only after that ONLY AFTER THAT, start to begin to think about how you're going to go about your fish breeding. What lines do you want to enhance? What colors and patterns are you aiming to shoot for?
Also ask yourself these questions too. How well do you know betta genetics? How well do you know the proper betta form for the type of betta your breeding? What are the major NO-NO's to look out for?
Sorry to burst your bubbles guys, but the reality of it is, its not as easy as you think. Sure you CAN get a nice color from a pairing of two substandard betta, but that doesn't mean you should do it.
Just think, please, think before you rush into something your not totally 100% prepared for.