The Branding section in the CRM only supports hexadecimal colour codes and does not have a color swatch selector like the Company Types configuration does.
Some customers have branding guidelines that have RGB codes in the format (RRR,GGG,BBB) which are flagged as invalid and not used correctly.
It would be good if the CRM would support this, and convert RGB codes or selected colors to the HEX equivalent to store in the settings.