But, if you have looked through the PowerPoint theme colors and have found nothing you want to use, I would recommend trying out a color palette creator. There are many free pallet creators out there, but the one I like to use is Adobe Color Creator. In this application, you can change the RGB values of a color and it will give you corresponding colors that work as a theme. As a result, this will help you build a nice-looking set of theme colors. Likewise, you can also use the Extract from Image option to pull theme colors and create a palette from a photo. Check out this application here.