diff --git a/the-cup.ino b/the-cup.ino
index 70d85ec..7b3cc8d 100644
--- a/the-cup.ino
+++ b/the-cup.ino
@@ -23,6 +23,8 @@
 #define SS_PIN SDA
 #define SLEEP_DURATION 1
 
+#define RGB_BRIGHTNESS 4 // Change neopixel brightness (max 255)
+
 MFRC522DriverPinSimple ss_1_pin(SS_PIN); // Configurable, take an unused pin, only HIGH/LOW required, must be different to SS 2.
 
 MFRC522DriverSPI driver_1{ss_1_pin};
@@ -110,11 +112,13 @@ void byte_to_string(byte array[], unsigned int len, char buffer[]) {
 }
 
 void displayError() {
-  blink(6, 300);
+  rgbLedWrite(RGB_BUILTIN, RGB_BRIGHTNESS, 0, 0);  // Green
+  delay(1000);
 }
 
 void displaySuccess() {
-  blink(1, 1000);
+  rgbLedWrite(RGB_BUILTIN, 0, RGB_BRIGHTNESS, 0);  // Green
+  delay(1000);
 }
 
 void blink(unsigned int times, unsigned int duration) {