Antoine Guenet
9521a4b5d6
Commit [1] introduced a "custom" type of button as the only type of button whose background color we are allowed to change. But the option to change any button's background color exists in mass_mailing so we end up with the same option in two different places. This removes that previously existing default option. [1]: https://github.com/odoo/odoo/commit/a010c91b5ee119cf54ed1a68a6ea06b2bc5f3978 task-3096806 closes odoo/odoo#108269 Signed-off-by: David Monjoie (dmo) <dmo@odoo.com>