diff --git a/src/main/java/org/saturnclient/config/Config.java b/src/main/java/org/saturnclient/config/Config.java
index c986eca..d215197 100644
--- a/src/main/java/org/saturnclient/config/Config.java
+++ b/src/main/java/org/saturnclient/config/Config.java
@@ -28,6 +28,9 @@ public class Config {
     public static FloatProperty titleScale = guiScale();
     public static FloatProperty menuScale = guiScale();
     public static FloatProperty hudMenuScale = guiScale();
+
+    /** Added in 0.1.3, so a config without it was saved by an older version */
+    static final String MENU_BLUR = "Menu blur";
     public static KeybindingProperty openEmoteWheel = Property.keybinding(GLFWProvider.GLFW_KEY_B);
 
     private static FloatProperty guiScale() {
@@ -57,7 +60,7 @@ public class Config {
         config.property("Cloak Physics", cloakPhysics, "Let cloaks swing as you move");
         config.property("Stagger Animations", stagger, "Animate list items one after another");
         config.property("World blur", backgroundBlur, "How much the world or panorama behind Saturn's screens is blurred");
-        config.property("Menu blur", menuBlur, "How much the game is blurred through translucent menus");
+        config.property(MENU_BLUR, menuBlur, "How much the game is blurred through translucent menus");
         config.property("Widget blur", widgetBlur, "How much the game is blurred through translucent buttons and the dock");
         config.property("Title screen scale", titleScale, "How big the title screen is, relative to Minecraft's GUI scale");
         config.property("Menu scale", menuScale, "How big the mods, settings and cosmetics menus are, relative to Minecraft's GUI scale");
diff --git a/src/main/java/org/saturnclient/config/ConfigManager.java b/src/main/java/org/saturnclient/config/ConfigManager.java
index f844fe0..d9c4535 100644
--- a/src/main/java/org/saturnclient/config/ConfigManager.java
+++ b/src/main/java/org/saturnclient/config/ConfigManager.java
@@ -156,10 +156,25 @@ public class ConfigManager {
      * Load only a single property immediately after creation
      */
     private void loadSingleProperty(String name, Property prop) {
+        JsonNode element = getSaved(name);
 
+        if (element != null) {
+            prop.loadFromJson(element);
+        }
+    }
+
+    /**
+     * Whether the config file has a value for {@code name} in this namespace,
+     * which tells which version last saved it.
+     */
+    public boolean isSaved(String name) {
+        return getSaved(name) != null;
+    }
+
+    private JsonNode getSaved(String name) {
         JsonNode source = cachedJson != null ? cachedJson : loadAndCache();
         if (source == null || !source.isObject())
-            return;
+            return null;
 
         JsonNode currentScope = source;
 
@@ -170,16 +185,12 @@ public class ConfigManager {
             if (next != null && next.isObject()) {
                 currentScope = next;
             } else {
-                return;
+                return null;
             }
 
         }
 
-        JsonNode element = currentScope.get(name);
-
-        if (element != null) {
-            prop.loadFromJson(element);
-        }
+        return currentScope.get(name);
     }
 
     /**
diff --git a/src/main/java/org/saturnclient/config/Theme.java b/src/main/java/org/saturnclient/config/Theme.java
index a0b0eaf..d2269c2 100644
--- a/src/main/java/org/saturnclient/config/Theme.java
+++ b/src/main/java/org/saturnclient/config/Theme.java
@@ -81,6 +81,29 @@ public class Theme {
         config.property("Widget Radius", WIDGET_RADIUS, "Corner rounding of buttons and cards");
 
         config.property("Font", FONT, "Font of every Saturn screen");
+
+        if (!parent.isSaved(Config.MENU_BLUR)) {
+            upgradeOpaqueColors();
+        }
+    }
+
+    /**
+     * Before 0.1.3 panels and cards were made translucent in code, and the
+     * background and primary colors were saved fully opaque. Saved colors that
+     * are an old default or preset get the translucency the colors now carry
+     * themselves; colors the player picked are left as they are. Runs only on
+     * configs from older versions, so a preset color later set opaque on
+     * purpose stays opaque.
+     */
+    private static void upgradeOpaqueColors() {
+        for (Preset preset : PRESETS) {
+            if (BACKGROUND.value == (preset.background() | 0xFF000000)) {
+                BACKGROUND.value = preset.background();
+            }
+            if (PRIMARY.value == (preset.primary() | 0xFF000000)) {
+                PRIMARY.value = preset.primary();
+            }
+        }
     }
 
     /**