I hate those cold blue lights, too. Ditto cold, icy white.
Warm white please, and preferably the old fashioned, soft-light, twinkly ones. The modern ones just aren't the same.
Not sure whether I'm a Christmas snob or not. I don't like tinsel, especially coloured tinsel, nor would I want plastic lit-up Father Christmases etc., outside, but I'm happy to see them outside other people's houses - anything to brighten up dark, dank winter days. I hate it when it's all taken down and you're in miserable January with so long to go till spring.
OTOH I like bog standard crackers with daft plastic tat and silly jokes inside. Plastic vampire fangs were a great hit one year! Can't see the point of posh crackers with 'tasteful' things inside - it's usually just more expensive tat that still ends up in the fruit bowl or the bin by the end of January.
Oh, and we always have to have 'icicles', aka silver lametta, on our tree. They shiver and catch the light. Our (always real) tree is never 'tasteful' as such or colour-themed - we have decorations going back decades, including a few non tasteful but much loved ones from when I was small and only ever had a very little tree that went back in the garden each year, to be dug up again next Christmas. Poor thing never really recovered in between, but was eventually pensioned off and left to grow.