Kettle handle at Haughtongreen bothy

This bothy is just off the Pennine Way north of Hadrian's Wall. Whilst we were there, I noticed that the kettle handle is black. Closer inspection reveals that the kettle itself is aluminium so that it won't rust. It is silver because that colour emits infra-red heat radiation badly. You don't want the main kettle to be emitting too much heat radiation because that would be inefficient. But the handle needs to stay cool. The handle is made of steel - you can tell from the rust. The black is enamel paint. It could be that black emits heat radiation better making for a cooler handle. But the handle is shiny enamel which isn't good. It's probably just that someone randomly thought that black would look better.