Grubby Amtico tile joints - how can I renovate?

[Aulus]

I have metallic-look Amtico tiles, not sure of the type, but their edges have a slight bevel which after a few years is looking very black - part shadow, part trapped dirt.

I've heard that grout isn't that successful, could anyone tell me a suitable solution other than scraping tile by tile & washing?

much thanks in advance!

 

[lymmranger]

just replied in your post in the flooring section