Capital One today launched an interactive online 'Do-It-Yourself' credit card program for customers, which leads them through an array of options resulting in the card that suits them best. As choices are made, certain options are greyed out so you can see, in real time, the various trade-offs of having this or that card. So, if you decide to opt for an annual fee, you can earn rewards faster. The greying out is evident in the screengrab, below.