     String command = Serial.readStringUntil(':');
     String argument = Serial.readStringUntil(';');
     
-    if(equal(command,"instrument")) { // set instrument color
+    if(command=="i") { // set instrument color
       Serial.println(command);
       if(argument.length()==11) {
         // argument likes "255.255.255"

        Serial.println(argument);
      }
    }
    else if(equal(command,"effect")) { // set effect color
      if(argument.length()==11) {
        // argument likes "255.255.255"
        e_color_r = constrainValue(argument.substring(0,3).toInt());

      updateLED();
    }
  }
}

// limitation of brightness
