QColorDialog's HTML field does not support ALPHA component

The Qt provided dialogue only shows #RRGGBB not #AARRGGBB in the HTML field when it is created with the

QColorDialog::ShowAlphaChannel

option; also the validation code does not permit the user to enter more than six hex digits in that field in order to specify the alpha component (I note that the field does handle the entry of a #RGB value - i.e. with three single hex digits, as it immediately multiples them by 17 after the third digit is entered to scale the RGB components to a 256 value range) ...