diff --git a/extlib/xgui/src/main/java/org/mini/gui/GButton.java b/extlib/xgui/src/main/java/org/mini/gui/GButton.java
index 5271f529..3a9e5a39 100644
--- a/extlib/xgui/src/main/java/org/mini/gui/GButton.java
+++ b/extlib/xgui/src/main/java/org/mini/gui/GButton.java
@@ -7,6 +7,7 @@
 
 import org.mini.glfm.Glfm;
 
+import static org.mini.gui.GToolkit.getStyle;
 import static org.mini.gui.GToolkit.nvgRGBA;
 import static org.mini.glwrap.GLUtil.toCstyleBytes;
 import static org.mini.nanovg.Nanovg.*;
@@ -20,6 +21,7 @@ public class GButton extends GObject {
     protected byte[] text_arr;
     protected String preicon;
     protected byte[] preicon_arr;
+    protected float[] preiconColor;
     protected boolean bt_pressed = false;
     float oldX, oldY;
 
@@ -58,6 +60,15 @@ public void setPreIcon(String preicon) {
         preicon_arr = toCstyleBytes(preicon);
     }
 
+    public float[] getPreiconColor() {
+        return preiconColor;
+    }
+
+    public void setPreiconColor(float[] preiconColor) {
+        this.preiconColor = preiconColor;
+    }
+
+
     @Override
     public void mouseButtonEvent(int button, boolean pressed, int x, int y) {
         if (isInArea(x, y)) {
@@ -156,7 +167,8 @@ boolean paintFlying(long vg, float x, float y) {
 
             iw = nvgTextBoundsJni(vg, 0, 0, preicon_arr, 0, preicon_arr.length, null);
 
-            nvgFillColor(vg, textColor);
+            float[] pc = preiconColor == null ? getStyle().getTextFontColor() : preiconColor;
+            nvgFillColor(vg, pc);
             nvgTextAlign(vg, NVG_ALIGN_CENTER | NVG_ALIGN_MIDDLE);
             nvgTextJni(vg, x + w * 0.5f - tw * 0.5f, y + h * 0.5f + move, preicon_arr, 0, preicon_arr.length);
         }
diff --git a/extlib/xgui/src/main/java/org/mini/gui/GColorSelector.java b/extlib/xgui/src/main/java/org/mini/gui/GColorSelector.java
index c18bc78d..06099be8 100644
--- a/extlib/xgui/src/main/java/org/mini/gui/GColorSelector.java
+++ b/extlib/xgui/src/main/java/org/mini/gui/GColorSelector.java
@@ -17,6 +17,9 @@
  */
 class GColorSelector extends GObject {
 
+    /**
+     * these color can't change by user
+     */
     public static final float[] RED = new float[]{0xff, 0x00, 0x00, 0xff};
     public static final float[] GREEN = new float[]{0x00, 0xff, 0x00, 0xff};
     public static final float[] BLUE = new float[]{0x00, 0x00, 0xff, 0xff};
@@ -59,6 +62,57 @@ public GColorSelector(GForm form, float pos, float left, float top, float width,
 
     }
 
+    /**
+     * 0.0f - 1.0f value of r,g,b,a
+     *
+     * @param r
+     * @param g
+     * @param b
+     * @param a
+     * @return
+     */
+    public static float[] getColor(float r, float g, float b, float a) {
+        return new float[]{r, g, b, a};
+    }
+
+    /**
+     * 0 - 255 value of r,g,b,a
+     *
+     * @param r
+     * @param g
+     * @param b
+     * @param a
+     * @return
+     */
+    public static float[] getColor(int r, int g, int b, int a) {
+        return new float[]{r / 255f, g / 255f, b / 255f, a / 255f};
+    }
+
+    public static float[] getColor(int rgba) {
+        int r = (rgba >> 24) & 0xff;
+        int g = (rgba >> 16) & 0xff;
+        int b = (rgba >> 8) & 0xff;
+        int a = (rgba) & 0xff;
+        return new float[]{r / 255f, g / 255f, b / 255f, a / 255f};
+    }
+
+    public static int getHexColor(float[] color) {
+        int r = (int) (color[0] * 255);
+        int g = (int) (color[1] * 255);
+        int b = (int) (color[2] * 255);
+        int a = (int) (color[3] * 255);
+        return (a << 24) | (r << 16) | (g << 8) | b;
+    }
+
+    public static float[] copyColor(float[] color) {
+        if (color == null) return new float[4];
+        return new float[]{color[0], color[1], color[2], color[3]};
+    }
+
+    public static void copyColor(float[] src, float[] dest) {
+        if (src == null || dest == null || src.length != 4 || dest.length != 4) return;
+        System.arraycopy(src, 0, dest, 0, 4);
+    }
 
     @Override
     public void cursorPosEvent(int x, int y) {
diff --git a/extlib/xgui/src/main/java/org/mini/gui/GListItem.java b/extlib/xgui/src/main/java/org/mini/gui/GListItem.java
index 0b87ba76..8167fb6b 100644
--- a/extlib/xgui/src/main/java/org/mini/gui/GListItem.java
+++ b/extlib/xgui/src/main/java/org/mini/gui/GListItem.java
@@ -8,6 +8,7 @@
 import org.mini.glfm.Glfm;
 
 import static org.mini.glwrap.GLUtil.toCstyleBytes;
+import static org.mini.gui.GToolkit.getStyle;
 import static org.mini.gui.GToolkit.nvgRGBA;
 import static org.mini.nanovg.Nanovg.*;
 
@@ -18,6 +19,7 @@ public class GListItem extends GContainer {
 
     protected byte[] preicon_arr;
     protected String preicon;
+    protected float[] preiconColor;
 
     protected GImage img;
     protected GList list;
@@ -54,6 +56,15 @@ public void setPreIcon(String preicon) {
         preicon_arr = toCstyleBytes(preicon);
     }
 
+    public float[] getPreiconColor() {
+        return preiconColor;
+    }
+
+    public void setPreiconColor(float[] preiconColor) {
+        this.preiconColor = preiconColor;
+    }
+
+
     /**
      * @return the label
      */
@@ -170,10 +181,12 @@ public boolean paint(long vg) {
         } else if (preicon_arr != null) {
             nvgFontSize(vg, GToolkit.getStyle().getIconFontSize());
             nvgFontFace(vg, GToolkit.getFontIcon());
-            nvgFillColor(vg, c);
+            float[] pc = preiconColor == null ? getStyle().getTextFontColor() : preiconColor;
+            nvgFillColor(vg, pc);
             nvgTextAlign(vg, NVG_ALIGN_CENTER | NVG_ALIGN_MIDDLE);
             nvgTextJni(vg, x + thumb * 0.5f, y + thumb * 0.5f + 2, preicon_arr, 0, preicon_arr.length);
         }
+        nvgFillColor(vg, c);
         GToolkit.drawTextLine(vg, tx + ((img == null && preicon_arr == null) ? 0 : thumb) + pad, ty + thumb / 2, getText(), list.getFontSize(), c, NVG_ALIGN_LEFT | NVG_ALIGN_MIDDLE);
         return true;
     }
diff --git a/extlib/xgui/src/main/java/org/mini/gui/GToolkit.java b/extlib/xgui/src/main/java/org/mini/gui/GToolkit.java
index f0fc3789..df349905 100644
--- a/extlib/xgui/src/main/java/org/mini/gui/GToolkit.java
+++ b/extlib/xgui/src/main/java/org/mini/gui/GToolkit.java
@@ -656,11 +656,11 @@ static public GFrame getFileChooser(GForm form, String title, String path, FileF
             path = AppLoader.getProperty("filechooserpath");
         }
         if (path == null || "".equals(path)) {
-            path = "./";
+            path = GCallBack.getInstance().getApplication().getSaveRoot();  //android can't access out of app dir
         }
         File file = new File(path);
         if (!file.exists()) {
-            file = new File(GCallBack.getInstance().getApplication().getSaveRoot());
+            file = new File(".");
         }
 
         GContainer gp = frame.getView();
@@ -690,7 +690,7 @@ static public GFrame getFileChooser(GForm form, String title, String path, FileF
 
 
         y += btnH + pad;
-        btnH = 25f;
+        btnH = 35f;
         float btnW = 40f;
         GButton upBtn = new GButton(form, "", x, y, btnW, btnH);
         upBtn.setPreIcon("⬆");
@@ -840,6 +840,9 @@ private static void setChooserResult(GObject listItem) {
         }
     }
 
+    static float[] dirColor = new float[]{0.7f, 0.7f, 0.2f, 0.7f};
+    static float[] fileColor = new float[]{0.4f, 0.4f, 0.7f, 0.7f};
+
     private static void chooserAddFilesToList(File dir, FileFilter filter, GList list) {
         File[] files = dir == null ? File.listRoots() : dir.listFiles(filter);
         Arrays.sort(files, (f1, f2) -> {
@@ -865,8 +868,10 @@ private static void chooserAddFilesToList(File dir, FileFilter filter, GList lis
             GListItem item = list.addItem(null, lab + "   | " + file.length() + " | " + new Date(file.lastModified()));
             if (file.isDirectory()) {
                 item.setPreIcon("\uD83D\uDCC1");
+                item.setPreiconColor(dirColor);
             } else {
                 item.setPreIcon("\uD83D\uDCC4");
+                item.setPreiconColor(fileColor);
             }
             item.setAttachment(file);
             item.setActionListener(fileChooserItemListener);
diff --git a/extlib/xgui/src/main/java/org/mini/layout/XButton.java b/extlib/xgui/src/main/java/org/mini/layout/XButton.java
index 619af879..3d15869a 100644
--- a/extlib/xgui/src/main/java/org/mini/layout/XButton.java
+++ b/extlib/xgui/src/main/java/org/mini/layout/XButton.java
@@ -14,6 +14,7 @@ public class XButton
     //
     protected String pic;
     protected int addon = XDef.SPACING_BUTTON_ADD;
+    float[] preiconColor;
 
     protected GButton button;
 
@@ -32,6 +33,8 @@ protected void parseMoreAttribute(String attName, String attValue) {
             pic = attValue;
         } else if (attName.equals("addon")) {
             addon = Integer.parseInt(attValue);
+        } else if (attName.equals("pcolor")) {
+            preiconColor = parseHexColor(attValue);
         }
     }
 
@@ -70,6 +73,9 @@ protected void createAndSetGui() {
             button = createGuiImpl();
             initGuiMore();
             button.setPreIcon(preicon);
+            if (preiconColor != null) {
+                button.setPreiconColor(preiconColor);
+            }
         } else {
             button.setLocation(x, y);
             button.setSize(width, height);
diff --git a/extlib/xgui/src/main/java/org/mini/layout/XList.java b/extlib/xgui/src/main/java/org/mini/layout/XList.java
index 46700f35..67198d2a 100644
--- a/extlib/xgui/src/main/java/org/mini/layout/XList.java
+++ b/extlib/xgui/src/main/java/org/mini/layout/XList.java
@@ -22,6 +22,7 @@ protected static class ListItem {
         boolean selected;
         float[] color;
         String preicon;
+        float[] preiconColor;
     }
 
     protected Vector items = new Vector();
@@ -85,6 +86,7 @@ public void parse(KXmlParser parser, XmlExtAssist assist) throws Exception {
                     item.selected = ("1".equals(tmp1)) ? true : false;
                     try {
                         item.preicon = parser.getAttributeValue(null, "preicon");
+                        item.preiconColor = parseHexColor(parser.getAttributeValue(null, "pcolor"));
                     } catch (Exception e) {
                     }
                     String tmp2 = parser.nextText();
@@ -147,6 +149,9 @@ protected void createAndSetGui() {
                 if (item.color != null) {
                     gli.setColor(item.color);
                 }
+                if (item.preiconColor != null) {
+                    gli.setPreiconColor(item.preiconColor);
+                }
                 list.add(gli);
                 if (item.selected) {
                     selectCount++;
diff --git a/mobile/androidapp/app/src/main/java/org/minijvm/activity/JvmNativeActivity.java b/mobile/androidapp/app/src/main/java/org/minijvm/activity/JvmNativeActivity.java
index 2394b323..f420982e 100644
--- a/mobile/androidapp/app/src/main/java/org/minijvm/activity/JvmNativeActivity.java
+++ b/mobile/androidapp/app/src/main/java/org/minijvm/activity/JvmNativeActivity.java
@@ -5,6 +5,7 @@
 import android.app.NativeActivity;
 import android.content.ClipData;
 import android.content.ClipboardManager;
+import android.content.ComponentName;
 import android.content.Intent;
 import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
@@ -545,19 +546,31 @@ private boolean checkPackInfo(String packname) {
 
     public int openOtherApp(String urls, String more, int detectAppInstalled) {
         try {
-            if (detectAppInstalled != 0) {
-                if (!checkPackInfo(urls)) {
-                    return 1;
+
+            if (more != null && more.equals("URL")) {
+                Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(urls));
+                startActivity(intent);
+            } else {
+                if (detectAppInstalled != 0) {
+                    if (!checkPackInfo(urls)) {
+                        return 1;
+                    }
                 }
-            }
-            Intent intent = getPackageManager().getLaunchIntentForPackage(urls);
-            if (intent != null) {
-                intent.putExtra("type", "110");
-                intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+                String[] paras = urls.split(" ");
+                String pkgName = paras[0];
+                String activityName = paras[1];
+
+                Intent intent = new Intent(Intent.ACTION_MAIN);
+                ComponentName cmp = new ComponentName(pkgName, activityName);
+                intent.addCategory(Intent.CATEGORY_LAUNCHER);
+                intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+                intent.setComponent(cmp);
                 startActivity(intent);
                 return 0;
             }
+
         } catch (Exception e) {
+            e.printStackTrace();
         }
         return 1;
     }
diff --git a/mobile/c/glfm/glfm_platform_android.c b/mobile/c/glfm/glfm_platform_android.c
index 48c9ddf5..44e9835b 100755
--- a/mobile/c/glfm/glfm_platform_android.c
+++ b/mobile/c/glfm/glfm_platform_android.c
@@ -2295,6 +2295,7 @@ int openOtherApp(const char *curl, const char *more, int detectAppInstalled){
     JNIEnv *jni = platformData->jniEnv;
 
     jstring jstrUrl = (*jni)->NewStringUTF(jni, curl);
+    if (!more)more = "";
     jstring jstrMore = (*jni)->NewStringUTF(jni, more);
 
     glfm__callJavaMethodWithArgs(jni, app->activity->clazz, "openOtherApp",