Hi @camille35974,
Sure, you can do this by adding some CSS under Appearance > Customize > Additional CSS on your website (or use a Custom CSS field in your theme).
The below CSS example sets the button to a black background color, and the text will be set to white.
#cmplz-manage-consent button.cmplz-btn.cmplz-manage-consent {
background-color: #333333; /* background color */
color: #ffffff; /* text color */
}
Kind regards, Jarno
Thanks a lot, it works perfectly ! 😉