In relation to this issue:
How can the width of a label be taken?
Billboards have a width that can be set.
The goal is to be able to have a label with a background, via a Billboard or Rectangle, but give it a width based on the label’s width.
Also aware of this feature being which will allow a balloon for a label: https://github.com/AnalyticalGraphicsInc/cesium/issues/954
Any ideas on how can we achieve the same?