Testing some 2015 battery multicolour LED strings.

There seems to have been a sudden bias towards using phosphor based LED colours in Xmas lights this year. Not only in the battery sets, but the mains sets too. This gives a much better pastel yellow and red than using the traditional gallium arsenide versions of those LEDs, but also allows them to be run in parallel on the battery versions, as the forward voltages are fairly closely matched.
This video is a comparison of some of these sets from various sources, with only one clear loser. A set from BM homestores (in the UK) which had the phosphor based yellow and red to match the blue chip, but cheaped out on the green and went for green chips with a lower forward voltage that means that the lights don't all fade out in a controlled manner together as the batteries discharge, but quickly drop to a point where just the green LEDs are lit.
A real oddity were the Tiger lights with their red insulated wire and unusual choice of phosphor colours.