diff --git a/config/rzl/index.js b/config/rzl/index.js
index 99d083d..69af447 100644
--- a/config/rzl/index.js
+++ b/config/rzl/index.js
@@ -186,7 +186,7 @@ const config: Config = {
       name: "Snackbar",
       position: [510, 500],
       icon: mdi("fridge"),
-      iconColor: tasmota.icon_color("snackbar", hex("#E20074")),
+      iconColor: tasmota.iconColor("snackbar", hex("#E20074")),
       ui: [
         {
           type: "toggle",
@@ -337,7 +337,7 @@ const config: Config = {
       name: "Infoscreen",
       position: [255, 495],
       icon: mdi("television-guide flip-v"),
-      iconColor: tasmota.icon_color("infoscreen", hex("#4444FF")),
+      iconColor: tasmota.iconColor("infoscreen", hex("#4444FF")),
       ui: [
         {
           type: "toggle",
diff --git a/config/rzl/olymp.js b/config/rzl/olymp.js
index a4d730a..0ed8822 100644
--- a/config/rzl/olymp.js
+++ b/config/rzl/olymp.js
@@ -49,7 +49,7 @@ export const controls: Controls = {
     name: "LED Olymp",
     position: [196, 154],
     icon: mdi("white-balance-iridescent rotate-45"),
-    iconColor: tasmota.icon_color("ledOlymp", rainbow),
+    iconColor: tasmota.iconColor("ledOlymp", rainbow),
     ui: [
       {
         type: "toggle",
@@ -93,7 +93,7 @@ export const controls: Controls = {
     name: "Drucker",
     position: [335, 90],
     icon: mdi("printer"),
-    iconColor: tasmota.icon_color("printerOlymp"),
+    iconColor: tasmota.iconColor("printerOlymp"),
     ui: [
       {
         type: "toggle",
diff --git a/config/rzl/utils.js b/config/rzl/utils.js
index 413b06c..2fbe615 100644
--- a/config/rzl/utils.js
+++ b/config/rzl/utils.js
@@ -25,13 +25,13 @@ export const tasmota = {
       defaultValue: "offline"
     }
   }),
-  icon_color: (name: string, on_color: Color = hex("#00FF00")) =>
+  iconColor: (name: string, onColor: Color = hex("#00FF00")) =>
     (state: State) => {
       if (state[`${name}_online`] === "offline") {
         return hex("#888888");
       } else {
         if (state[name] === "on") {
-          return on_color;
+          return onColor;
         } else {
           return hex("#000000");
         }
@@ -99,8 +99,8 @@ export const tradfri = {
 };
 
 const esperStatistics = (name: string,
-  prev_ui: Array<ControlUI> = []): Array<ControlUI> => (
-  prev_ui.concat([
+  prevUI: Array<ControlUI> = []): Array<ControlUI> => (
+  prevUI.concat([
     {
       type: "section",
       text: "Funkdose"