For customizable background colors in StitchBuddy HD / View I had to create a tool to select a color: While on OS X default color pickers are available, iOS doesn't provide such a control out of the box.

I decided to go with a color wheel, which in my opinion is the right way to pick from multiple colors without loosing usability. There is still some work to do before StitchBuddy's next versions on iOS will allow you to select a background color and an option to print it as well, but this feature will definitely come.