Edits a role's color.
{"msg":"RoleManager","instance_guid":"my_session_id_here","cmd":"EditRoleColor","role_name":"good bean","color":"red","role_id":"superadmin"}

The server will change the role's color and respond with:
{"MSG":"EditedRoleColor","RoleName":"good bean","Color":"red"}

If the role is locked:
{"MSG":"LockedRole"}

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