diff --git a/include/config.sample.h b/include/config.sample.h
index 500f248..5075afb 100644
--- a/include/config.sample.h
+++ b/include/config.sample.h
@@ -21,10 +21,15 @@
 #define SPEEDUP 1
 
 #define MAX_MILLIAMPS 1000
+// Maximum color difference for the random effects.
+// This changes the hue value +/- this value. Use a maximum value of 127, otherwise strange things might happen.
+#define COLOR_DIFFERENCE 25
 
 #define WIFI_SSID "..."
 #define WIFI_PASS "..."
 
+#define OTA_HOSTNAME "..."
+
 #define MQTT_CLIENT_ID "espleaf"
 #define MQTT_USER "..."
 #define MQTT_PASS "..."
diff --git a/src/main.cpp b/src/main.cpp
index e7b1d87..086ad51 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -220,11 +220,9 @@ void loop() {
 				}
 
 				if (random8(128)==0) {
-					if (active_mode == AM_FIRST_CORNER) {
-						corners[0]->blend_to(CHSV(random8(), 255, 255));
-					} else {
-						corners[random16(corners.size())]->blend_to(CHSV(random8(), 255, 255));
-					}
+					uint16_t corner = (active_mode == AM_FIRST_CORNER) ? 0 : random16(corners.size());
+					CHSV color = rgb2hsv_approximate(corners[corner]->color);
+					corners[corner]->blend_to(CHSV(color.h - COLOR_DIFFERENCE + random8(2*COLOR_DIFFERENCE), 255, 255));
 				}
 			} else if (active_mode == AM_NODES || active_mode == AM_FIRST_NODE) {
 				for(Node* node : nodes) {
@@ -233,11 +231,9 @@ void loop() {
 				}
 
 				if (random8(128)==0) {
-					if (active_mode == AM_FIRST_NODE) {
-						nodes[0]->blend_to(CHSV(random8(), 255, 255));
-					} else {
-						nodes[random8(nodes.size())]->blend_to(CHSV(random8(), 255, 255));
-					}
+					uint16_t corner = (active_mode == AM_FIRST_NODE) ? 0 : random8(nodes.size());
+					CHSV color = rgb2hsv_approximate(corners[corner]->color);
+					nodes[corner]->blend_to(CHSV(color.h - COLOR_DIFFERENCE + random8(2*COLOR_DIFFERENCE), 255, 255));
 				}
 			} else if (active_mode == AM_FLASH) {
 				for (Node* node : nodes) {