#include <Toggle.h>

class augmentedButton : public Toggle {
  public:
    byte bPin;
    const char* label1;
    const char* label2;
    augmentedButton(const byte p, const char* l1, const char* l2) :
      Toggle(p), bPin(p), label1(l1), label2(l2)  {}

    void begin() {
      Toggle::begin(bPin);
    }
};

const byte potPin = A0;

augmentedButton buttons[] = {
  {3, "yellow", "YELLOW"},
  {4, "blue", "BLUE"},
  {5, "red", "RED"},
  {6, "green", "GREEN"},
};

void setup() {
  for (auto& b : buttons)  b.begin();
  Serial.begin(115200);
}

void loop() {
  bool shifted = analogRead(potPin ) >= 512;
  for (auto& b : buttons) {
    b.poll();
    if (b.onPress()) {
      Serial.println(shifted ? b.label1 : b.label2);
    }
  }
}