Be able to create a custom (named) color palette. One possible way to implement it may be to upload a list of CSS variables:
–primary-100: #ebf3f3;
–primary-200: #c8dcde;
–primary-300: #a4c6c8;
–primary-400: #81afb3;
–primary-500: #5d999d;
–primary-600: #3a8288;
–primary-700: #306b70;
–primary-800: #255357;
–primary-900: #1b3c3f;
–secondary-100: #f7f2ed;
–secondary-200: #e9dbcc;
–secondary-300: #dcc4ac;
… etc.