No disabled add to cart settings on mobile layout

I’m currently making a website for an online store. Currently, all of my products are out of stock. On the desktop website, instead of “add to cart” it says “out of stock”. I had to edit the text and button colours to make it visible, which is in the add to cart display settings under disabled. On the mobile layout, there isn’t this setting. I’m unable to customize the disabled add to cart button, as there isn’t an option for disabled add to cart buttons.
Briefly explain what’s not working or where you’re stuck

Working in
Wix Harmony

What I’m trying to do
Change the colour of the disabled add to cart text, to make it visible.

What I’ve tried so far
Changed the colours, fonts, reloaded site, published site, asked live chat experts.

Extra context

Both screenshots are on the mobile layout. On the desktop layout, you can see the text “out of stock” and the disabled add to cart option. You can see the text on the mobile website when you mark the product as in stock.

@StarryEras
have you tried to enable the Velo. and You can achieve this Behaviour using custom velo coding