Minecraft Nightlight

int redpin = 9; //select the pin for the red LED
int greenpin = 10;// select the pin for the green LED
int bluepin = 11; // select the pin for the  blue LED
const int buttonPin = 2;    // the number of the pushbutton pin
int buttonState;             // the current reading from the input pin
int count = 0;
int r = 0;
int g = 0;
int b = 0;

void setup() {
    pinMode(buttonPin, INPUT_PULLUP); 
    pinMode(redpin, OUTPUT); 
    pinMode(bluepin, OUTPUT); 
    pinMode(greenpin, OUTPUT); 
    Serial.begin(115200);
    analogWrite(9, r); analogWrite(10, g); analogWrite(11, b);  //  Set intial state to all off
    }

void loop() {

  // read the state of the switch into a local variable:
  int buttonState = digitalRead(buttonPin);
    if(buttonState == LOW){
      delay(500);
      count++;
      }
    if (count >=13){
       count=0;
       }
        if (count==0){
          blacktodiamond();
          count=1;
       }
        if (count==1){
          diamond();
        }
        if (count==2){
          diamondtoiron();
          count=3;
        }
        if (count==3){
          iron();
        }
        if (count==4){
          irontoemerald();
          count=5;
        }
        if (count==5){
          emerald();
        }
        if (count==6){
          emeraldtolapis();
          count=7;
        }
        if (count==7){
          lapis();
        }
        if (count==8){
          lapistoredstone();
          count=9;
        }
        if (count==9){
          redstone();
        }
        if (count==10){
          redstonetogold();
          count=11;
        }
        if (count==11){
          gold();
        }
        if (count==12){
          goldtodiamond();
          count=13;
        }
        if (count==13){
          diamond();
        }
    delay(200);
}


//  Preset Colours
void blacktodiamond(){
    for (int fadeValue = 0 ; fadeValue <= 255; fadeValue += 2) {
    // sets the value (range from 0 to 255):
    r=r+2;
    if(r>=255){r=255;}
    g=g+2;
    if(g>=200){g=200;}
    b=b+2;
    if(b>=255){b=255;}
    analogWrite(9, r); analogWrite(10, g); analogWrite(11, b);
    // wait for 30 milliseconds to see the dimming effect
    delay(30);
    }
}

// Blue/White Diamond
void diamond(){
  r=255; g=200; b=255;
  analogWrite(9, r); analogWrite(10, g); analogWrite(11, b);
}

void diamondtoiron(){
    for (int fadeValue = 0 ; fadeValue <= 254; fadeValue += 5) {
    // sets the value (range from 0 to 255):
    b=b-3;
    if(b<=100){b=100;}
    analogWrite(9, r); analogWrite(10, g); analogWrite(11, b);
    // wait for 30 milliseconds to see the dimming effect
    delay(30);
    }
}   

// White Iron
void iron(){
  r=255; g=200; b=100;
  analogWrite(9, r); analogWrite(10, g); analogWrite(11, b);
}
void irontoemerald(){
    for (int fadeValue = 0 ; fadeValue <= 254; fadeValue += 5) {
    // sets the value (range from 0 to 255):
    r=r-5;
    g=g+5; if(g>=255){g=255;}
    b=b-5; if(b<=0){b=0;}
    analogWrite(9, r); analogWrite(10, g); analogWrite(11, b);
    // wait for 30 milliseconds to see the dimming effect
    delay(30);
    }
}   
// Green Emerald
void emerald(){
  r=0; g=255; b=0;
  analogWrite(9, r); analogWrite(10, g); analogWrite(11, b);
}
void emeraldtolapis(){
    for (int fadeValue = 0 ; fadeValue <= 254; fadeValue += 5) {
    // sets the value (range from 0 to 255):
    g=g-5;
    b=b+5;
    analogWrite(9, r); analogWrite(10, g); analogWrite(11, b);
    // wait for 30 milliseconds to see the dimming effect
    delay(30);
    }
}
//  Blue Lapis
void lapis(){
  r=0; g=0; b=255;
  analogWrite(9, r); analogWrite(10, g); analogWrite(11, b);
}
void lapistoredstone(){
    for (int fadeValue = 0 ; fadeValue <= 254; fadeValue += 5) {
    // sets the value (range from 0 to 255):
    r=r+5;
    b=b-5;
    analogWrite(9, r); analogWrite(10, g); analogWrite(11, b);
    // wait for 30 milliseconds to see the dimming effect
    delay(30);
    }
}

//  Red Redstone
void redstone(){
  r=255; g=0; b=0;
  analogWrite(9, r); analogWrite(10, g); analogWrite(11, b);
}
void redstonetogold(){
    for (int fadeValue = 0 ; fadeValue <= 100; fadeValue += 5) {
    // sets the value (range from 0 to 255):
    g=g+5;
    analogWrite(9, r); analogWrite(10, g); analogWrite(11, b);
    // wait for 30 milliseconds to see the dimming effect
    delay(30);
    }
}

// Yellow Gold
void gold(){
  r=255; g=100; b=0;
  analogWrite(9, r); analogWrite(10, g); analogWrite(11, b);
}

void goldtodiamond(){
    for (int fadeValue = 0 ; fadeValue <= 254; fadeValue += 5) {
    // sets the value (range from 0 to 255):
    g=g+3;
    if(g>=200){g=200;}
    b=b+5;
    if(b>=255){b=255;}
    analogWrite(9, r); analogWrite(10, g); analogWrite(11, b);
    // wait for 30 milliseconds to see the dimming effect
    delay(30);
    }
}


void fadetoblack(){
    for (int fadeValue = 0 ; fadeValue <= 254; fadeValue += 5) {
    // sets the value (range from 0 to 255):
    r=r-5;
    g=g-5;
    b=b-5;
    analogWrite(9, r); analogWrite(10, g); analogWrite(11, b);
    // wait for 30 milliseconds to see the dimming effect
    delay(30);
    }
}