Here's the Arduino code! 

//  LED color interpreter
//  Made by Thomas Burns
//  www.thomasburns.net

//  last revised: 04/12/2020


#include <adafruit_neopixel.h>
#include <wire.h> 
#include <liquidcrystal_i2c.h>

int red, green, blue = 0;

// I2C pins declaration
LiquidCrystal_I2C lcd(0x27, 2, 1, 0, 4, 5, 6, 7, 3, POSITIVE);

// IMPORTANT: Set pixel COUNT, PIN and TYPE
#define PIN 2
#define NUMPIXELS 10

// Initialize the neopixel strip
Adafruit_NeoPixel strip(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  // Set the pins connected to the potentiometer as inputs
  pinMode(A0, INPUT);
  pinMode(A2, INPUT);
  pinMode(A3, INPUT);

  // LCD
  lcd.begin(16, 2);
  lcd.backlight();
  delay(1000);

  // AV test
  strip.begin();
  strip.show(); // Initialize all pixels to 'off'
 
  // magenta chase
  for (int i=0; i<=9; i++) {
     strip.setPixelColor(i, 56, 11, 69);
     strip.show();
     delay(50);
  }
  
  // yellow chase
  for (int i=0; i<=9; i++) {
     strip.setPixelColor(i, 85, 48, 12);
     strip.show();
     delay(50);
  }
  
  // cyan chase
  for (int i=0; i<=9; i++) {
     strip.setPixelColor(i, 56, 100, 100);
     strip.show();
     delay(50);
  }

  // clear LEDs
  for (int i=0; i<=9; i++) {
     strip.setPixelColor(i, 0, 0, 0);
     strip.show();
     delay(50);
  }

  delay(200);

  lcd.setCursor(0,0); 
  lcd.print("Good");
  delay(100); 
  lcd.setCursor(0,0); 
  lcd.print("Good evening,");
  delay(500);
  lcd.setCursor(0,1); 
  lcd.print("Thomas.");
  delay(2000);
  lcd.clear();
  delay(500);

  // print static text in setup to prevent flicker
  lcd.setCursor(0, 0);
  lcd.print("Red 0");
  lcd.setCursor(8, 0);
  lcd.print("Grn 0");
  lcd.setCursor(0, 1);
  lcd.print("Blue 0");
}

void loop() {

  // Read and store the potentiometer values
  // We are scaling them from a 10bit scale to an 8 bit scale
  red = analogRead(A0) >> 2; // 10 to 8 = shift two bits
  green = analogRead(A2) >> 2;
  blue = analogRead(A3) >> 2;

  // set colors of all the eight neopixles
  for (int pixel = 0; pixel < 16; pixel++)
  {
    strip.setPixelColor(pixel, red, green, blue);
  }
  strip.show();//Update the strip with new color values
  delay(50);

  // LCD code
  lcd.setCursor(4, 0); // move cursor just behind the static word "RED "
  lcd.print("   "); // 3 spaces to clear previous value
  lcd.setCursor(4, 0); // back to pos 5 again
  lcd.print(red); // print value
  lcd.setCursor(13, 0);
  lcd.print("   ");
  lcd.setCursor(12, 0);
  lcd.print(green);
  lcd.setCursor(5, 1);
  lcd.print("   ");
  lcd.setCursor(5, 1);
  lcd.print(blue);
}