piano-midi-monitor/src/services/colors.json

{
  "REDDISH": "rgb(255,134,113)",
  "YELLOWISH": "rgb(248,190,74)",
  "GREENISH": "rgb(224,255,113)",
  "BLUISH": "rgb(113,153,255)",
  "PURPLISH": "rgb(190,145,255)"
}