Allison,

Would this post work for you?

https://community.skuid.com/t/change-background-color-of-an-edit-field

Thanks,

Bill

No, I get an error on the highlighted part

It looks like you’re mixing CSS and Javascript.  CSS (the highlighted section) needs to be added separately, like through the CSS resource on the page or externally through a static resource or other location.  All you should need to do in script is add the class.

Personally I try to avoid business logic in script and prefer to use parameters and to handle situations where data influences the UI.  This post might help out for you.

https://community.skuid.com/t/css-for-template-fields