1. A color should already be set using the UI tool, and you also need the ability to set the color using a hex value
2. Load the color control
3. Change the color to something and apply using the gui color selector controls
4. Save your change
5. Edit the color again
6. Specifically set the color using "#99B8E6"
7. You may need to try to set it to that color "#99B8E6" several times, but after a couple tries UI controls will override your specifically entered color selection to something that is close to that color, but not exactly the color you intended.