Dont paint selection background on lead selection cell.

core/src/main/java/com/github/weisj/darklaf/ui/cell/DarkCellRendererToggleButton.java

@@ -26,6 +26,7 @@ package com.github.weisj.darklaf.ui.cell;
 import com.github.weisj.darklaf.components.SelectableTreeNode;
 import com.github.weisj.darklaf.decorators.CellRenderer;
 import com.github.weisj.darklaf.ui.button.DarkToggleButtonUI;
+import com.github.weisj.darklaf.ui.table.DarkTableCellFocusBorder;
 import com.github.weisj.darklaf.ui.table.DarkTableUI;
 import com.github.weisj.darklaf.ui.tree.DarkTreeCellRenderer;
 import com.github.weisj.darklaf.util.DarkUIUtil;
@@ -60,11 +61,16 @@ public class DarkCellRendererToggleButton<T extends JToggleButton & CellEditorTo
         toggleButton.setHorizontalAlignment(table.getComponentOrientation().isLeftToRight() ? LEFT : RIGHT);
         toggleButton.setHasFocus(focus);
 
+        boolean isLeadSelectionCell = DarkUIUtil.hasFocus(table)
+            && table.getSelectionModel().getLeadSelectionIndex() == row
+            && (table.getColumnModel().getSelectionModel().getLeadSelectionIndex() == column
+            || DarkTableCellFocusBorder.isRowFocusBorder(table));
+
         boolean alternativeRow = Boolean.TRUE.equals(table.getClientProperty(DarkTableUI.KEY_ALTERNATE_ROW_COLOR));
         Color alternativeRowColor = UIManager.getColor("Table.alternateRowBackground");
         Color normalColor = UIManager.getColor("Table.background");
         Color background = alternativeRow && row % 2 == 1 ? alternativeRowColor : normalColor;
-        if (!(isSelected) || table.isEditing()) {
+        if (!isSelected || isLeadSelectionCell || table.isEditing()) {
             toggleButton.setBackground(background);
             toggleButton.setForeground(table.getForeground());
         } else {

core/src/main/java/com/github/weisj/darklaf/ui/table/DarkTableCellEditorToggleButton.java

@@ -55,11 +55,16 @@ public class DarkTableCellEditorToggleButton extends AbstractCellEditor implemen
         }
         toggleButton.setHorizontalAlignment(table.getComponentOrientation().isLeftToRight() ? LEFT : RIGHT);
 
+        boolean isLeadSelectionCell = DarkUIUtil.hasFocus(table)
+            && table.getSelectionModel().getLeadSelectionIndex() == row
+            && (table.getColumnModel().getSelectionModel().getLeadSelectionIndex() == column
+            || DarkTableCellFocusBorder.isRowFocusBorder(table));
+
         boolean alternativeRow = Boolean.TRUE.equals(table.getClientProperty(DarkTableUI.KEY_ALTERNATE_ROW_COLOR));
         Color alternativeRowColor = UIManager.getColor("Table.alternateRowBackground");
         Color normalColor = table.getBackground();
         Color background = alternativeRow && row % 2 == 1 ? alternativeRowColor : normalColor;
-        if (!(isSelected) || table.isEditing()) {
+        if (!isSelected || isLeadSelectionCell || table.isEditing()) {
             toggleButton.setBackground(background);
             toggleButton.setForeground(table.getForeground());
         } else {

core/src/main/java/com/github/weisj/darklaf/ui/table/DarkTableCellFocusBorder.java

@@ -62,9 +62,9 @@ public class DarkTableCellFocusBorder extends DarkCellBorder {
         }
     }
 
-    protected static boolean isRowFocusBorder(final Component c) {
+    public static boolean isRowFocusBorder(final Component c) {
         return c instanceof JComponent
-            && Boolean.TRUE.equals(((JComponent) c).getClientProperty(DarkTableUI.KEY_SHOW_ROW_FOCUS_BORDER));
+            && Boolean.TRUE.equals(((JComponent) c).getClientProperty(DarkTableUI.KEY_FULL_ROW_FOCUS_BORDER));
     }
 
     protected static boolean forcePaintLeft(final Component c) {

core/src/main/java/com/github/weisj/darklaf/ui/table/DarkTableCellRenderer.java

@@ -63,12 +63,17 @@ public class DarkTableCellRenderer extends DefaultTableCellRenderer {
         this.setVerticalAlignment(SwingConstants.CENTER);
         setHorizontalAlignment(table.getComponentOrientation().isLeftToRight() ? LEFT : RIGHT);
 
+        boolean isLeadSelectionCell = DarkUIUtil.hasFocus(table)
+            && table.getSelectionModel().getLeadSelectionIndex() == row
+            && (table.getColumnModel().getSelectionModel().getLeadSelectionIndex() == column
+            || DarkTableCellFocusBorder.isRowFocusBorder(table));
+
         if (DarkTableCellFocusBorder.isRowFocusBorder(table)
             && table.getSelectionModel().getLeadSelectionIndex() == row
             && !table.isEditing()
             && DarkUIUtil.hasFocus(table)) {
             component.setBorder(UIManager.getBorder("Table.focusSelectedCellHighlightBorder"));
-            component.putClientProperty(DarkTableUI.KEY_SHOW_ROW_FOCUS_BORDER, true);
+            component.putClientProperty(DarkTableUI.KEY_FULL_ROW_FOCUS_BORDER, true);
             JTableHeader header = table.getTableHeader();
             TableColumn draggedColumn = (header == null) ? null : header.getDraggedColumn();
             boolean forceLeft = false;
@@ -81,14 +86,14 @@ public class DarkTableCellRenderer extends DefaultTableCellRenderer {
             component.putClientProperty(DarkTableUI.KEY_FORCE_RIGHT_BORDER, forceRight);
             component.putClientProperty(DarkTableUI.KEY_FORCE_LEFT_BORDER, forceLeft);
         } else {
-            component.putClientProperty(DarkTableUI.KEY_SHOW_ROW_FOCUS_BORDER, false);
+            component.putClientProperty(DarkTableUI.KEY_FULL_ROW_FOCUS_BORDER, false);
         }
 
         boolean alternativeRow = Boolean.TRUE.equals(table.getClientProperty(DarkTableUI.KEY_ALTERNATE_ROW_COLOR));
         Color alternativeRowColor = UIManager.getColor("Table.alternateRowBackground");
         Color normalColor = table.getBackground();
         Color background = alternativeRow && row % 2 == 1 ? alternativeRowColor : normalColor;
-        if (!(isSelected) || table.isEditing()) {
+        if (!isSelected || isLeadSelectionCell || table.isEditing()) {
             component.setBackground(background);
             component.setForeground(table.getForeground());
         } else {

core/src/main/java/com/github/weisj/darklaf/ui/table/DarkTableUI.java

@@ -52,7 +52,7 @@ public class DarkTableUI extends DarkTableUIBridge {
     public static final String KEY_ALTERNATE_ROW_COLOR = KEY_PREFIX + "alternateRowColor";
     public static final String KEY_RENDER_BOOLEAN_AS_CHECKBOX = KEY_PREFIX + "renderBooleanAsCheckBox";
     public static final String KEY_BOOLEAN_RENDER_TYPE = KEY_PREFIX + "booleanRenderType";
-    public static final String KEY_SHOW_ROW_FOCUS_BORDER = KEY_PREFIX + "rowFocusBorder";
+    public static final String KEY_FULL_ROW_FOCUS_BORDER = KEY_PREFIX + "rowFocusBorder";
     public static final String KEY_FORCE_LEFT_BORDER = KEY_PREFIX + "forcePaintLeft";
     public static final String KEY_FORCE_RIGHT_BORDER = KEY_PREFIX + "forcePaintRight";
     public static final String KEY_FILE_CHOOSER_PARENT = KEY_PREFIX + "fileChooserParent";