Style suddenly changed

I have created a design system with a bunch of styles and components in it which I’ve published as a team library. One of the styles I’ve created is ‘border top’ which applies a shadow effect to elements using a grey inner shadow.

Within a project file I’ve imported the library and applied my ‘border top’ to many elements. However, I’ve somehow managed to change the border top colour to blue throughout my project file by accident.

Any idea how I can change it back? I’ve tried clicking “Go to style definition to edit” from within ‘View style’ but when I follow this link, it takes me to my library file where ‘border top’ appears as expected (with a grey border).

Any help? Desperate :cold_sweat: Thanks!