add inverted icons for dark theme

src/main/java/com/sparrowwallet/sparrow/AppController.java

@@ -2186,6 +2186,14 @@ public class AppController implements Initializable {
         } else {
             tabs.getScene().getStylesheets().remove(darkCss);
         }
+
+        for(Tab tab : tabs.getTabs()) {
+            if(tab.getUserData() instanceof WalletTabData) {
+                Label tabLabel = (Label)tab.getGraphic();
+                WalletIcon walletIcon = (WalletIcon)tabLabel.getGraphic();
+                walletIcon.refresh();
+            }
+        }
     }
 
     @Subscribe

src/main/java/com/sparrowwallet/sparrow/control/WalletIcon.java

@@ -2,7 +2,9 @@ package com.sparrowwallet.sparrow.control;
 
 import com.sparrowwallet.drongo.wallet.*;
 import com.sparrowwallet.sparrow.AppServices;
+import com.sparrowwallet.sparrow.Theme;
 import com.sparrowwallet.sparrow.glyphfont.FontAwesome5;
+import com.sparrowwallet.sparrow.io.Config;
 import com.sparrowwallet.sparrow.io.ImageUtils;
 import com.sparrowwallet.sparrow.io.Storage;
 import javafx.application.Platform;
@@ -60,18 +62,16 @@ public class WalletIcon extends StackPane {
                 WalletModel walletModel = keystore.getWalletModel();
 
                 Image image = null;
-                try {
-                    image = new Image("image/" + walletModel.getType() + "-icon.png", 15, 15, true, true);
-                } catch(Exception e) {
-                    //ignore
+                if(Config.get().getTheme() == Theme.DARK) {
+                    image = loadImage("image/" + walletModel.getType() + "-icon-invert.png");
                 }
 
                 if(image == null) {
-                    try {
-                        image = new Image("image/" + walletModel.getType() + ".png", 15, 15, true, true);
-                    } catch(Exception e) {
-                        //ignore
-                    }
+                    image = loadImage("image/" + walletModel.getType() + "-icon.png");
+                }
+
+                if(image == null) {
+                    image = loadImage("image/" + walletModel.getType() + ".png");
                 }
 
                 if(image != null && !image.isError()) {
@@ -88,6 +88,16 @@ public class WalletIcon extends StackPane {
         }
     }
 
+    private Image loadImage(String imageName) {
+        try {
+            return new Image(imageName, 15, 15, true, true);
+        } catch(Exception e) {
+            //ignore
+        }
+
+        return null;
+    }
+
     private void addWalletIcon(String walletId) {
         Image image = new Image(PROTOCOL + ":" + walletId + "?" + QUERY, WIDTH, HEIGHT, true, false);
         getChildren().clear();