Casino glamour once leaned on red velvet drapes, crystal chandeliers and rooms...

https://spark-wiki.win/index.php/Why_Do_Metallic_Frames_Work_Better_as_Accents_Than_as_the_Whole_UI%3F

Casino glamour once leaned on red velvet drapes, crystal chandeliers and rooms designed to make every entrance feel grand. Now, designers bring that same sense of occasion to a phone screen, using dark backgrounds and metallic borders to frame the action