does anyone know how to change the color of the box this text is in (idk what to call it) i figured out how to change a few things like my font and background color but that's it

if u know how please lmk <3

hi can someone pls give me song suggestions
my most listened to genres are indie and rock and some of my favorite artists are..
-snail mail
-beabadoobee
-pheobe bridgers
-nirvana
-soccer mommy
-mac demarco
-and indigo de souza
i like lots of different kinds of music so any suggestion is okay