Blue Highlighters

I wrote below with a review of several highlighters.  One thing I've noticed, though, is that at least in the past year, almost every highlighter company has changed their formula for blue.  While before, a number of versions were bright and light, the most recent batches - from all manufacturers - are so dark as to be nearly markers.  This is a bad trend but I don't know any brand who has kept to the mission goal of making actual highlighters.