You can easily (and inexpensively) paint a mirror frame to complement any room in your home, even if you cannot remove the mirror from the frame.
Painting a Mirror Frame: Easy Yet Stunning Ideas - Girl in the Garage®
How to paint a mirror frame to give it depth and dimension. Great tips with links to the exact products used.
Easy DIY Painted Mirror Frame Tutorial, Farmhouse Style
Update an Old Mirror Frame DIY Painting Tutorial - Brownie Bites Blog
How To Paint A Mirror Frame - Salvaged Inspirations
Plastic Mirror Frame Makeover with Chalk Paint
Plastic Mirror Frame Makeover with Chalk Paint
House & Home - DIY: Vintage Velvet Mirror
Simplest way to paint this mirror frame? : r/FurniturePainting