Choose color by field with hex in selected content type or additional hex field in taxonomy

it would be nice to be able to choose the colour based on a field that preserves the hexadecimal of the colour, in the taxonomy or in the content type instead of having to choose them manually one by one within the fullcalendar settings.
For example, in the attached photo, I used the color_field module to store the hexadecimal code of the colour.