You are trying to select a color for your Kintera Thon under Front Page Customization. After you click the color box and select a color from the color picker or enter a hex value, the color does not save.
We are currently evaluating this issue and will update this article when we have more information.
Steps to Duplicate
Navigate to Communities>Special Events>Friends Asking Friends>Kintera Thon
Hover over your event and select Website Info
Click Front Page Customization
Click on the color box
Select a color any color from the color wheel
Note: a value is not saved in the
Enter a hex value in the box and click select
Note: the box refreshes and the value is not saved