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 072e9a300..47a986da7 100644
--- a/arduino-ide-extension/src/browser/data/dark.color-theme.json
+++ b/arduino-ide-extension/src/browser/data/dark.color-theme.json
@@ -12,7 +12,7 @@
     "editor.background": "#1f272a",
     "editor.foreground": "#dae3e3",
     "editor.lineHighlightBackground": "#434f5410",
-    "editor.selectionBackground": "#f1c40f",
+    "editor.selectionBackground": "#00818480",
     "editorCursor.foreground": "#434f54",
     "editorWhitespace.foreground": "#bfbfbf",
     "editorWidget.background": "#171e21",
@@ -45,6 +45,7 @@
     "arduino.output.background": "#000000",
     "arduino.toolbar.hoverBackground": "#dae3e3",
     "sideBar.background": "#101618",
+    "sideBar.foreground": "#dae3e3",
     "input.background": "#000000",
     "foreground": "#dae3e3",
     "settings.headerForeground": "#dae3e3",
@@ -146,4 +147,4 @@
       }
     }
   ]
-}
+}
\ No newline at end of file
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 2f4660652..8681a133e 100644
--- a/arduino-ide-extension/src/browser/data/default.color-theme.json
+++ b/arduino-ide-extension/src/browser/data/default.color-theme.json
@@ -12,7 +12,7 @@
     "editor.background": "#ffffff",
     "editor.foreground": "#4e5b61",
     "editor.lineHighlightBackground": "#434f5410",
-    "editor.selectionBackground": "#f1c40f",
+    "editor.selectionBackground": "#7fcbcdb3",
     "editorCursor.foreground": "#434f54",
     "editorWhitespace.foreground": "#bfbfbf",
     "editorWidget.background": "#f7f9f9",
@@ -45,6 +45,7 @@
     "arduino.output.background": "#000000",
     "arduino.toolbar.hoverBackground": "#f7f9f9",
     "sideBar.background": "#f7f9f9",
+    "sideBar.foreground": "#4e5b61",
     "input.background": "#ffffff",
     "foreground": "#4e5b61",
     "settings.headerForeground": "#4e5b61",
@@ -146,4 +147,4 @@
       }
     }
   ]
-}
+}
\ No newline at end of file