Arduino RGB LED randomizer

/*
RGB LED Mood Light by HydroCorp Industries
Coded by _______________________
Help from Arduino Forums @ http://forum.arduino.cc

This is licesened under the Attribution-NonCommercial 4.0 Internationa
Basically, it means you just have to say the author was me, and don't use it to make money.
Contact me at waterlubber@rocketmail.com for license exclusions

~~Changelog~~
v1.0_beta: Basic colors. Red, Red/Green, Green, Green/Blue, Blue, Blue/Red

v1.0: Added random number generation!
*/

int redPower = 0;   //Power level of red led from 0-255
int redPin = 9;     //Pin the red led is hooked up to.
int greenPower = 0; //Power level of green...
int greenPin = 10;  //Pin the green led...
int bluePower = 0;  //etc.
int bluePin = 11;   //etc.
int oldRedPower = 0;
int oldGreenPower = 0;
int oldBluePower = 0;

void setup() {
  pinMode(redPin, OUTPUT);  //Declares pins as outputs
  pinMode(greenPin, OUTPUT);
  pinMode(bluePin, OUTPUT);
  randomSeed(analogRead(0));//Resets the Random Number Generator

}

void loop() {
  redPower = random(256);   //Gets some random numbers, then stores them as new 'goal' numbers
  greenPower = random(256);
  bluePower = random(256);

  while(oldRedPower < redPower) { //Increase brightness to get to the new number
    analogWrite(redPin, oldRedPower + 1);
    oldRedPower++;
    delay(5);
  }
  while(oldRedPower > redPower) { //Decrease brightness to get to the new number
    analogWrite(redPin, oldRedPower -1);
    oldRedPower--;
    delay(5);
  }
  while(oldGreenPower < greenPower) {
    analogWrite(greenPin, oldGreenPower + 1);
    oldGreenPower++;
    delay(5);
  }
  while(oldGreenPower > greenPower) {
    analogWrite(greenPin, oldGreenPower -1);
    oldGreenPower--;
    delay(5);
  }
  while(oldBluePower < bluePower) {
    analogWrite(bluePin, oldBluePower + 1);
    oldBluePower++;
    delay(5);
  }
  while(oldBluePower > bluePower) {
    analogWrite(bluePin, oldBluePower - 1);
    oldBluePower--;
    delay(5);
  }
  oldRedPower = redPower; //Age the young!
  oldGreenPower = greenPower;
  oldBluePower = bluePower;
  delay(random(5,20)*500); //Delay a random time
}