diff --git a/src/hasp_config.h b/src/hasp_config.h
index 9a05d065..cd556da5 100644
--- a/src/hasp_config.h
+++ b/src/hasp_config.h
@@ -3,12 +3,12 @@
 
 #if HASP_USE_CONFIG > 0
 
-#ifndef HASP_CONFIG_H
-#define HASP_CONFIG_H
+    #ifndef HASP_CONFIG_H
+        #define HASP_CONFIG_H
 
-#include "hasp_conf.h"
-#include "ArduinoJson.h"
-#include "hasp_debug.h" // for TAG_CONF
+        #include "hasp_conf.h"
+        #include "ArduinoJson.h"
+        #include "hasp_debug.h" // for TAG_CONF
 
 /* ===== Default Event Processors ===== */
 void configSetup(void);
@@ -49,18 +49,19 @@ const char F_CONFIG_GROUP[] PROGMEM     = "group";
 const char F_CONFIG_BAUD[] PROGMEM      = "baud";
 const char F_CONFIG_LOG[] PROGMEM       = "log";
 const char F_CONFIG_PROTOCOL[] PROGMEM  = "proto";
-const char F_GUI_ROTATION[] PROGMEM     = "rotation";
-const char F_GUI_TICKPERIOD[] PROGMEM   = "tickperiod";
+const char F_GUI_ROTATION[] PROGMEM     = "rotate";
+const char F_GUI_INVERT[] PROGMEM       = "invert";
+const char F_GUI_TICKPERIOD[] PROGMEM   = "tick";
 const char F_GUI_IDLEPERIOD1[] PROGMEM  = "idle1";
 const char F_GUI_IDLEPERIOD2[] PROGMEM  = "idle2";
 const char F_GUI_CALIBRATION[] PROGMEM  = "calibration";
-const char F_GUI_BACKLIGHTPIN[] PROGMEM = "bcklpin";
-const char F_GUI_POINTER[] PROGMEM      = "pointer";
-const char F_DEBUG_TELEPERIOD[] PROGMEM = "teleperiod";
+const char F_GUI_BACKLIGHTPIN[] PROGMEM = "bckl";
+const char F_GUI_POINTER[] PROGMEM      = "cursor";
+const char F_DEBUG_TELEPERIOD[] PROGMEM = "tele";
 const char F_GPIO_CONFIG[] PROGMEM      = "config";
 
 const char HASP_CONFIG_FILE[] PROGMEM = "/config.json";
 
-#endif
+    #endif
 
 #endif // HASP_USE_CONFIG
\ No newline at end of file
diff --git a/src/hasp_gui.cpp b/src/hasp_gui.cpp
index 681c4f00..da0217ff 100644
--- a/src/hasp_gui.cpp
+++ b/src/hasp_gui.cpp
@@ -506,6 +506,9 @@ bool guiGetConfig(const JsonObject & settings)
     if(guiShowPointer != settings[FPSTR(F_GUI_POINTER)].as<bool>()) changed = true;
     settings[FPSTR(F_GUI_POINTER)] = guiShowPointer;
 
+    if(guiInvertDisplay != settings[FPSTR(F_GUI_INVERT)].as<bool>()) changed = true;
+    settings[FPSTR(F_GUI_INVERT)] = guiInvertDisplay;
+
     /* Check CalData array has changed */
     JsonArray array = settings[FPSTR(F_GUI_CALIBRATION)].as<JsonArray>();
     uint8_t i       = 0;
@@ -559,6 +562,7 @@ bool guiSetConfig(const JsonObject & settings)
     changed |= configSet(guiSleepTime1, settings[FPSTR(F_GUI_IDLEPERIOD1)], F("guiSleepTime1"));
     changed |= configSet(guiSleepTime2, settings[FPSTR(F_GUI_IDLEPERIOD2)], F("guiSleepTime2"));
     changed |= configSet(guiRotation, settings[FPSTR(F_GUI_ROTATION)], F("guiRotation"));
+    changed |= configSet(guiInvertDisplay, settings[FPSTR(F_GUI_INVERT)], F("guiInvertDisplay"));
 
     if(!settings[FPSTR(F_GUI_POINTER)].isNull()) {
         if(guiShowPointer != settings[FPSTR(F_GUI_POINTER)].as<bool>()) {
diff --git a/src/svc/hasp_http.cpp b/src/svc/hasp_http.cpp
index 608e4815..37d08d78 100644
--- a/src/svc/hasp_http.cpp
+++ b/src/svc/hasp_http.cpp
@@ -237,7 +237,8 @@ void saveConfig()
     #endif
 
             } else if(save == String(PSTR("gui"))) {
-                settings[FPSTR(F_GUI_POINTER)] = webServer.hasArg(PSTR("pointer"));
+                settings[FPSTR(F_GUI_POINTER)] = webServer.hasArg(PSTR("cur"));
+                settings[FPSTR(F_GUI_INVERT)]  = webServer.hasArg(PSTR("inv"));
                 guiSetConfig(settings.as<JsonObject>());
 
             } else if(save == String(PSTR("debug"))) {
@@ -1093,7 +1094,11 @@ void webHandleGuiConfig()
         httpMessage += getOption(5, F("270 degrees - mirrored"), rotation == 5);
         httpMessage += F("</select></p>");
 
-        httpMessage += F("<p><input id='pointer' name='pointer' type='checkbox' ");
+        httpMessage += F("<p><input id='inv' name='inv' type='checkbox' ");
+        if(settings[FPSTR(F_GUI_INVERT)].as<bool>()) httpMessage += F(" checked");
+        httpMessage += F("><b>Invert Colors</b>");
+
+        httpMessage += F("<p><input id='cur' name='cur' type='checkbox' ");
         if(settings[FPSTR(F_GUI_POINTER)].as<bool>()) httpMessage += F(" checked");
         httpMessage += F("><b>Show Pointer</b>");