Where can I add my custom color palette in Impress?

Hi, I’m currently using LibreOffice version 6.4 and I wanted to know if there’s an option to add a custom color palette inside Impress because I saw some older tutorials on it and found that there was an option to do so in Options>Colors but that option is not anymore in the latest version.

I saw some older tutorials…

Is not available in 6.4 and earlier!

Can the following help?

Look here, please:

Color palette