Define a global custom color palette

I want to add a new palette to the "Default series” of palettes in the global settings. By clicking ‘add new palette’ it would open a "Brand Palette form” where I can add the following minimum hex colours:

1. Brand main colour

2. Brand fade colour 1

3. Brand fade colour 2

4. Brand fade colour 3

5. Brand bright standout colour

Saving that would enable me to select their Brand colours as a standard in the Global Default Settings to then also automatically gain access in the designer to define the colours of graphs and chats with that palette.