The color picker help the user to choose a color instead of picking it by id. The title and arial-label "no-color" default value are removed from the picker_preview because they are not accurate. Instead name of currently set color is used. Task ID 2128166 closes odoo/odoo#47474 Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>