[SOLVED] Change Backgound Template Color

Hello there, Could someone walk me through changing my template background color from gray to blue? I am using the Classic template and have tried to make this change through customizer, but the change is not reflected on the live site when I refresh the page.

I have uploaded screenshots. the site url is: nditoakwaibommediauk.org

While waiting for assistance I kept toiling. I have solved the issue. Thanks!

Problem solved.