Creates a new role (defaults all permissions to false)
{"msg":"RoleManager","instance_guid":"my_session_id_here","cmd":"CreateRole","role_name":"good bean","color":"green","role_id":"superadmin"}

The server will create the new role with all permissions set to false. The response you get:
{"MSG":"RoleAdded","RoleName":"good bean","Color":"green"}

If the role already exists, the server responds with:
{"MSG":"RoleExists"}

If you do not have permissions to edit the role or is not the host:
{"MSG":"DenyRoleAccess"}