RGB & Pin Testing Code v2

.ino

#include "application.h"

SYSTEM_THREAD(ENABLED);

enum led { red, green, blue };
led color;

void setup() {
  pinMode(TX, OUTPUT);
  pinMode(D1, OUTPUT);
  pinMode(D2, OUTPUT);
  pinMode(D3, OUTPUT);
  pinMode(D4, OUTPUT);
  pinMode(D4, OUTPUT);
  pinMode(D5, OUTPUT);
  pinMode(D6, OUTPUT);
  pinMode(D7, OUTPUT);
  RGB.control(true);
  RGB.brightness(100);
}

void loop() {
  switch(color) 
  {
    case red:
      RGB.color(255, 0, 0);
      color = blue;
      break;
    case blue:
      RGB.color(0, 255, 0);
      color = green;
      break;
    case green:
      RGB.color(0, 0, 255);
      color = red;
      break;
  }
  digitalWrite(TX, !digitalRead(TX));
  digitalWrite(D1, !digitalRead(D1));
  digitalWrite(D2, !digitalRead(D2));
  digitalWrite(D3, !digitalRead(D3));
  digitalWrite(D4, !digitalRead(D4));
  digitalWrite(D5, !digitalRead(D5));
  digitalWrite(D6, !digitalRead(D5));
  digitalWrite(D7, !digitalRead(D5));
  delay(200);
}