Bug?: backgroundColor not working

This:

$w.onReady( function () {

$w(‘#box1’).style.backgroundColor = “Green”;

});

does not work and gives the following in the console:
Wix code SDK error: The “backgroundColor” property of “box1” was set to an invalid “rgbaColor” value. The value is expected in one of the following formats:““red”, “#FF0000”, “#FF000000”, “rgb(225, 0, 0)” or “rgba(225, 0, 0, 0)””. Read more about “rgbaColor” values: “http://rgba.com

Also tried hex values, same problem.
EDIT:found it. Doc in Wix refers to a w3s-page, where all colours start with a capital. But in wix all should be lowercase.