Hey Marc,
This is possible through custom CSS. Please try this code in X > Theme Options > CSS:
.x-btn-widgetbar i {
display: none;
}
.x-btn-widgetbar:before {
content: 'Table/Hotel Bookings';
color: #fff;
position: absolute;
transform: rotate(47deg);
top: -23px;
right: -48px;}
.x-btn-widgetbar {
border-top-width: 50px;
border-left-width: 50px;
border-bottom-width: 50px;
border-right-width: 50px;
}
Kindly note that since this is a custom code that changes the default behavior/display of the theme, you will be responsible to maintain or update the code in case you require further changes or if the code stops working in future updates. If you are uncertain how to proceed, it would be best to get in touch with a developer.
There are several things you can do to style the widget area but mainly you will have to add some custom CSS to do it. I am not certain what changes you are trying to do to the widget area. If you can be more specific, we can provide some more suggestion how to do it.
Thank you.