Background colour not working

Hi all,

I’m currently developing a long awaited website for my company and I’ve run into an issue. On my website I use two primary background colours (white and whitesmoke), however the whitesmoke colour seems to have just vanished off all elements that had it. I’ve tried clearing cache and checking interactions. I can change the background of those elements to any other colour and it works, it just seems to be the one colour not ‘appearing’. I’ve also gone through my backups and it also doesn’t seem to show up on older versions.

Also, it worked perfectly fine before I went on a Christmas holiday.

Update: I’ve found that it seems to be an issue with the popup modal interaction but I’m not quite sure how to fix it.

I’m still a bit new to wed dev so forgive my site for any obvious flaws: Webflow - Greyhorse Digital Prototype