How can I alter transparency for unavailable sizes on Sense Theme?

Hello there, i would like to ask if can someone help me with this issue, i’m trying to find if i can to make the unavailable sizes a little bit more transparency than the available ones, for customers see which one is on stock and which one isn’t.

Available on this product: M, L, XL, XXL, 3XL

Unavailable: S, 4XL, 5XL, 6XL

The link to check:

https://puppyloft.ro/products/vesta-reflectorizanta-impermeabila-cu-imprimeu-camuflaj?variant=41955682254901


Thank you!

Did you add quantity for those product from backend.

you didnt understand, i mean when a product has 0 stock on a specific size, that size be more transparent, or marking with an X or something like that

like in this screenshot, this is in the collection page

nobody have a solution ?