collections {
  group { name: "example";
    parts {
      part { name: "background"; type: RECT;
        description { state: "default";
          color: 64 64 64 255;
        }
      }
      part { name: "label"; type: TEXT;
        description { state: "default";
          color: 255 255 255 255;
          text { font: "Sans"; size: 10; }
          text.text: "Hello World";
        }
      }
    }
  }
}