Arduino 1.10

#define RED_PIN 11
#define BLUE_PIN 10
#define GREEN_PIN 9
#define RED_BUT_PIN 4
#define BLUE_BUT_PIN 3
#define GREEN_BUT_PIN 2

void setup(){
pinMode(RED_PIN, OUTPUT);
pinMode(BLUE_PIN, OUTPUT);
pinMode(GREEN_PIN, OUTPUT);

pinMode(RED_BUT_PIN, INPUT_PULLUP);
pinMode(BLUE_BUT_PIN, INPUT_PULLUP);
pinMode(GREEN_BUT_PIN, INPUT_PULLUP);
}

int red = 0;
int blue = 0;
int green = 0;

boolean redWasUp = true;
boolean blueWasUp = true;
boolean greenWasUp = true;

void loop(){
Control(red, redWasUp, RED_PIN, RED_BUT_PIN);
Control(blue, blueWasUp, BLUE_PIN, BLUE_BUT_PIN);
Control(green, greenWasUp, GREEN_PIN, GREEN_BUT_PIN);
}

void Control(int &color, boolean &wasUp, int colorPin, int butPin){
if(handleClick(butPin, wasUp)){
if(color == 0)
color = 255;
else
color = 0;
analogWrite(colorPin, color);
}
}

boolean handleClick(int buttonPin, boolean wasUp){
boolean isUp = digitalRead(buttonPin);
if (wasUp && !isUp){
delay(10);
isUp = digitalRead(buttonPin);
}
if(isUp && !isUp){
delay(10);
isUp = digitalRead(buttonPin);
return !isUp;
}
}