Hi! I would consider myself a beginner so please bear with me.

I set up a site and used the theme Greek Yogurt. I wanted different colors so I went to the customize area and chose new colors for the things I wanted different. I saved it and my changes appeared in safari and chrome. But when browsing my site in Firefox it still shows the old colors. I cleared the Firefox cache and restarted the browser but experienced no change. Any idea how to fix this?

Some googling results talk about messing with css but I can't find where my "changed" color css is saved (its clearly saved somewhere since the new colors work in other browsers). I also wouldn't know what to change in the css, if anything.

Any help or advice is appreciated! Thanks!