int zelLed = 10;
int crvLed = 11;
byte zelena;
byte crvena;
String porZel = "Jacinata na zelenata dioda e ";
String porCrv = " , a jacinata na crvenata dioda e ";
int pauza = 500;

void setup() {
  pinMode(zelLed, OUTPUT);
  pinMode(crvLed, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  zelena=zelena-10;
  analogWrite(zelLed, zelena);
  crvena=crvena+5;
  analogWrite(crvLed, crvena);

  Serial.print(porZel);
  Serial.print(zelena);
  Serial.print(porCrv);
  Serial.println(crvena);
  delay(pauza);
}