For example:
…/.config master on AWS_Prod (use2)
starship.toml: [aws]
format = 'on [($profile )(\($region\) )]($style)'
style = 'bold #B23D2F'
symbol = " " <- cloud symbol
[aws.region_aliases]
us-east-1 = 'use1'
us-east-2 = 'use2'