diff --git a/designer-base/src/main/java/com/fr/design/mainframe/theme/TemplateThemePreviewPane.java b/designer-base/src/main/java/com/fr/design/mainframe/theme/TemplateThemePreviewPane.java
index ef9ad44693..fab425fbe7 100644
--- a/designer-base/src/main/java/com/fr/design/mainframe/theme/TemplateThemePreviewPane.java
+++ b/designer-base/src/main/java/com/fr/design/mainframe/theme/TemplateThemePreviewPane.java
@@ -8,6 +8,7 @@ import com.fr.log.FineLoggerFactory;
 
 import javax.swing.JPanel;
 import java.awt.Color;
+import java.awt.Graphics;
 import java.awt.Graphics2D;
 import java.awt.Image;
 import java.awt.RenderingHints;
@@ -81,4 +82,12 @@ public abstract class TemplateThemePreviewPane<T extends TemplateTheme> extends
 
         return null;
     }
+
+    @Override
+    public void paintComponent(Graphics g) {
+        g.clearRect(0, 0, 517, 532);
+        paintBackground((Graphics2D) g);
+    }
+
+    protected abstract void paintBackground(Graphics2D g);
 }
\ No newline at end of file
diff --git a/designer-base/src/main/java/com/fr/design/mainframe/theme/preview/FormThemePreviewPane.java b/designer-base/src/main/java/com/fr/design/mainframe/theme/preview/FormThemePreviewPane.java
index 0fc1944922..1445dab357 100644
--- a/designer-base/src/main/java/com/fr/design/mainframe/theme/preview/FormThemePreviewPane.java
+++ b/designer-base/src/main/java/com/fr/design/mainframe/theme/preview/FormThemePreviewPane.java
@@ -30,7 +30,6 @@ import java.awt.Graphics2D;
 import java.awt.BorderLayout;
 import java.awt.Color;
 import java.awt.Dimension;
-import java.awt.Graphics;
 import java.awt.geom.Rectangle2D;
 
 /**
@@ -97,12 +96,7 @@ public class FormThemePreviewPane extends TemplateThemePreviewPane<FormTheme> {
     }
 
 
-    @Override
-    public void paintComponent(Graphics g) {
-        paintBackground((Graphics2D) g);
-    }
-
-    private void paintBackground(Graphics2D g2d) {
+    protected void paintBackground(Graphics2D g2d) {
         if (background == null) {
             background = ColorBackground.getInstance(Color.WHITE);
         }
diff --git a/designer-base/src/main/java/com/fr/design/mainframe/theme/preview/ReportThemePreviewPane.java b/designer-base/src/main/java/com/fr/design/mainframe/theme/preview/ReportThemePreviewPane.java
index f4e23853d1..02d3aa96cf 100644
--- a/designer-base/src/main/java/com/fr/design/mainframe/theme/preview/ReportThemePreviewPane.java
+++ b/designer-base/src/main/java/com/fr/design/mainframe/theme/preview/ReportThemePreviewPane.java
@@ -23,7 +23,6 @@ import com.fr.plugin.chart.vanchart.VanChart;
 import java.awt.Graphics2D;
 import java.awt.BorderLayout;
 import java.awt.Color;
-import java.awt.Graphics;
 import java.awt.geom.Rectangle2D;
 
 /**
@@ -55,12 +54,9 @@ public class ReportThemePreviewPane extends TemplateThemePreviewPane<ReportTheme
         chartPreviewPane.refresh(theme);
         repaint();
     }
-    @Override
-    public void paintComponent(Graphics g) {
-        paintBackground((Graphics2D) g);
-    }
 
-    private void paintBackground(Graphics2D g2d) {
+
+    protected void paintBackground(Graphics2D g2d) {
         if (background == null) {
             background = ColorBackground.getInstance(Color.WHITE);
         }
diff --git a/designer-base/src/main/java/com/fr/design/style/color/ColorControlWindowWithAuto.java b/designer-base/src/main/java/com/fr/design/style/color/ColorControlWindowWithAuto.java
index 4d6f45a672..dc4eb9571b 100644
--- a/designer-base/src/main/java/com/fr/design/style/color/ColorControlWindowWithAuto.java
+++ b/designer-base/src/main/java/com/fr/design/style/color/ColorControlWindowWithAuto.java
@@ -114,8 +114,10 @@ public abstract class ColorControlWindowWithAuto extends ColorControlWindow {
             }
         }
 
+        @Override
         public Dimension getPreferredSize() {
-            return super.getPreferredSize();
+            Dimension dimension = super.getPreferredSize();
+            return new Dimension(dimension.width, dimension.height + BUTTON_HEIGHT);
         }
 
     }