This [test expectation](https://github.com/jsdom/cssstyle/blob/b527ed722364dc6d156487c652df100572075dee/lib/CSSStyleDeclaration.test.js#L197) is wrong: ```js style.color = '#ffffffff'; expect(style.color).toEqual('rgba(255, 255, 255, 1)'); ``` In Chrome/Firefox: ```js target.style.color = '#ffffffff' console.log(target.style.color) // "rgb(255, 255, 255)" ``` Though I believe that this is not described in any specification.