The green doesn't bother me either. But we have already received nasty letters from the municipality because we supposedly don't remove the weeds often enough...
Since then, I burn them off every few weeks, but a passive solution would of course be preferable to me...
Why? Biodiversity, bees and flowers, vegetation provides a natural anti-slip effect on black ice?
Here, only sweeping, spreading grit, and snow removal are included in the regulations. Hmm, I have to check again.
But as I said, surprisingly little grows there.
I do understand that you want a low-maintenance solution. The weed-free sand is not supposed to help for very long. I only know this by word of mouth. Slurry coating with mortar/concrete is apparently the most effective solution.