en_US

This its the default en_US.yml here you can change colors & messages

# ╔══════════════════════════════════════════════════════════╗
# ║           MyPlaceholder - Language: English              ║
# ╚══════════════════════════════════════════════════════════╝

prefix: "&#BEFFDD&lMyPlaceholder&r &8| "

command-messages:
  not-found: "&#FF3D00Command &f%command% &#FF3D00not found."
  no-permission: "&#FF3D00You don't have permission to execute this command."
  reload: "&#7CFC00Plugin has been reloaded successfully."
  config-set: "&#7CFC00Placeholder &f%placeholder% &#7CFC00has been changed to &f%value%"
  config-locked: "&#FF3D00Placeholder &f%placeholder% &#FF3D00is locked and cannot be edited in-game."
  parse-usage: "&#FF3D00Usage: /mp parse <player> <placeholder>"
  parse-player-not-found: "&#FF3D00Player &f%player% &#FF3D00not found."
  parse-result: "&#7CFC00Result for &f%placeholder%&#7CFC00:"
  error-log-header: "&#FF3D00&l[MyPlaceholder] Errors found on startup:"
  error-duplicate: "&#FF5500  ● Duplicate placeholder ID: &f%id% &#FF5500(found in &f%file1% &#FF5500and &f%file2%&#FF5500)"
  error-invalid: "&#FF5500  ● Invalid placeholder &f%id% &#FF5500in &f%file%&#FF5500: %reason%"
  error-none: "&#7CFC00No errors found in placeholder files."