diff --git a/ESP32-C3_ePaper/src/main.cpp b/ESP32-C3_ePaper/src/main.cpp
index cc6c92590..acae7655b 100644
--- a/ESP32-C3_ePaper/src/main.cpp
+++ b/ESP32-C3_ePaper/src/main.cpp
@@ -69,7 +69,7 @@ void setup() {
   
   // Add UI elements
   // Draw axis: (x1,y1) @ 5, 100 and width-2*margin_x height-2*margin_y
-  display.drawRect(5, 155, display.width()-10, display.height()-160, GxEPD_RED);
+  display.drawRect(5, 155, display.width()-10, display.height()-160, GxEPD_BLACK);
   display.setFont(&TomThumb);
   for (int i = 0; i < display.width()-10; i+=50) {
     display.setCursor(i, display.height());