Mitchell

The Symbol polyfill defines all Symbols on the [object prototype](https://github.com/Financial-Times/polyfill-service/blob/master/packages/polyfill-library/polyfills/Symbol/polyfill.js#L103), which causes unexpected results. ```js // returns true with polyfill.io using features=Symbol.iterator, should be false console.log(Symbol.iterator in {}); ``` [Angular](https://github.com/angular/angular/blob/master/packages/core/src/change_detection/change_detection_util.ts#L82)...

### Description When importing ``, it additionally imports `paper-styles/color.html`. This adds a not-insignificant 7.64kb (2.03kb gzipped) when bundling, or another HTTP request when using imports. ### Expected outcome I believe...