Application.put_env(:elixir, :ansi_enabled, true)
# PROTIP: to break, `#iex:break`
IEx.configure(
colors: [enabled: true],
default_prompt: [
"\e[G", # ANSI CHA, move cursor to column 1
:magenta,
"%prefix", # IEx prompt variable
"#",
"%counter", # IEx prompt variable
">", # plain string
:reset
] |> IO.ANSI.format |> IO.chardata_to_string
)