form #id_colour div{
     display: inline-block;
     margin-right: 15px;
     margin-bottom: 5px;
 }
 form #id_colour div label {
     border: 1px solid rgba(0, 0, 0, .26);
     border-radius: 1px;
     cursor: pointer;
     display: flex;
     width: 60px;
     height: 60px;
 }
 form #id_colour div input {
     display: none;
 }
 form #id_colour div input:checked+label {
     box-shadow: 0px 0px 4px 2px rgba(255, 255, 255, 0.4);
 }

 .Draftail-ToolbarButton[name^="COLOUR_"] {
     display: none;
 }