How do I create a new bootstrap color option ?

[tricial]

I am sure this is simple (or not) but I want to create a new bootstrap color option for service portal

So if I go to branding there are 6 options OOB

How can I add another option ?

I see it as a choice but I dont see were the actual color is being called.

Thank you

Tricia

[triciav]

Ok thank you for your explanation!