@Angus Grizzly
Uvex is the only company I know of who still sell blue lenses. Bliz, Poc and Shred used to, so might be possible to find old stock. Especially from Bliz, who discontinued them quite recently.
Uvex have several models with a blue base tint, usually category 2 or 3. They also make or recently made a kid's goggle in a category 1. All of them are usually available at decent prices online. Tend to switch categories and models from year to year, but the catalogues are quite informative and unlike most companies their illustrations show the base tints.
Dragon DX3s with a cat 1 blue lens from last season or the one before are still knocking around online and fit a smaller face - wide wrap but not a tall frame.
Next year's Dragon catalogue advertises a blue replacement lens for these and for the D1, though they did for the D1 two years ago, but no one stocked it and Dragon themselves couldn't help me find one.
Dragon also do a cat 1 violet lens in pretty much everything apart from the ones I've mentioned here. Haven't seen Dragon blue or violet so can't comment, just know they're available
On violet lenses, POC Clarity Comps are another option. For the category 1 lens, violet is a fitting description, but for the cat 2 with the blue mirror, to me at least its closer to red to look through.
Another violet Cat 2 is offered by Dainese (like the POC cat 2, it's at the darker end of the category). For some reason they call the lens Pink Gold, but it's actually purple, to the extent that to my eyes it's closer to blue than the POC Clarity Comp cat 1. (Comes as standard with the black frame, but they don't tell you that either, you'd think it needs buying as a replacement lens.) A few Dainese athletes can still be seen in blue lenses, but the company aren't selling them, or at least weren't when I enquired last year.
Bliz Nordic Light cat 2 lenses are supposed to be violet, but I haven't seen them.
As far as I know, most Sweet Protection RIG base tints are a variation on violet (or amethyst, in their words).
If anyone's looking for green - another less common offering now almost everything has gone pink: Uvex, Shred, Electric, Vola. Or Salice (but only in a cat 4).