While creating your program registration, click the "Appearance" tab at the top of your page.
From the "Appearance" tab, you can fully customize the appearance of the pages, upload a logo and background image or import an appearance from a previous program. Note: as you edit colors and make changes to your appearance, they will live change on the right-hand side similar to your registration form.
While selecting colors for your appearance, be sure to note the eyedropper tool next to each color as well. This tool will allow you to pull the exact color from a logo you have uploaded, allowing you to keep this appearance as professional as possible in portraying your organization's colors.