message: namespace overriding from stylesheet
diff: @@ -40,7 +40,7 @@ export function createStyleableStylesheet(config?: object): StylesheetWithContex
  }
  constructor(public styleDef: any) {
  super(styleDef);
  - this.namespace = 's' + (StylableContext.globalSheetCounter++);
  + this.namespace = this.namespace || ('s' + (StylableContext.globalSheetCounter++));
  StylableStylesheet.context.add(this);
  }
  }
  