diff --git a/arduino-ide-extension/src/browser/data/dark.color-theme.json b/arduino-ide-extension/src/browser/data/dark.color-theme.json
index a84225183..1a3f602a0 100644
--- a/arduino-ide-extension/src/browser/data/dark.color-theme.json
+++ b/arduino-ide-extension/src/browser/data/dark.color-theme.json
@@ -47,6 +47,13 @@
     "arduino.output.background": "#000000",
     "arduino.toolbar.button.hoverBackground": "#dae3e3",
     "arduino.toolbar.button.background": "#0ca1a6",
+    "arduino.toolbar.dropdown.border": "#7fcbcd",
+    "arduino.toolbar.dropdown.borderActive": "#0ca1a6",
+    "arduino.toolbar.dropdown.background": "#2c353a",
+    "arduino.toolbar.dropdown.label": "#dae3e3",
+    "arduino.toolbar.dropdown.iconSelected": "#3fae98",
+    "arduino.toolbar.dropdown.option.backgroundHover": "#374146",
+    "arduino.toolbar.dropdown.option.backgroundSelected": "#4e5b61",
     "arduino.toolbar.toggleBackground": "#f1c40f",
     "sideBar.background": "#101618",
     "sideBar.foreground": "#dae3e3",
diff --git a/arduino-ide-extension/src/browser/data/default.color-theme.json b/arduino-ide-extension/src/browser/data/default.color-theme.json
index ad4338f56..db11c1461 100644
--- a/arduino-ide-extension/src/browser/data/default.color-theme.json
+++ b/arduino-ide-extension/src/browser/data/default.color-theme.json
@@ -29,7 +29,7 @@
     "titleBar.activeForeground": "#f7f9f9",
     "terminal.background": "#000000",
     "terminal.foreground": "#e0e0e0",
-    "dropdown.border": "#f7f9f9",
+    "dropdown.border": "#dae3e3",
     "dropdown.background": "#ffffff",
     "dropdown.foreground": "#4e5b61",
     "activityBar.background": "#ecf1f1",
@@ -47,6 +47,13 @@
     "arduino.output.background": "#000000",
     "arduino.toolbar.button.hoverBackground": "#f7f9f9",
     "arduino.toolbar.button.background": "#7fcbcd",
+    "arduino.toolbar.dropdown.border": "#dae3e3",
+    "arduino.toolbar.dropdown.borderActive": "#7fcbcd",
+    "arduino.toolbar.dropdown.background": "#ffffff",
+    "arduino.toolbar.dropdown.label": "#4e5b61",
+    "arduino.toolbar.dropdown.iconSelected": "#1da086",
+    "arduino.toolbar.dropdown.option.backgroundHover": "#ecf1f1",
+    "arduino.toolbar.dropdown.option.backgroundSelected": "#dae3e3",
     "arduino.toolbar.toggleBackground": "#f1c40f",
     "sideBar.background": "#f7f9f9",
     "sideBar.foreground": "#4e5b61",