[Android Themes] evilisto:
This mod is originally posted in Nexus S theme forum :

[MOD] Change ICS App Switcher to Stock / Chrome browser style

So here is guide for above mods..

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1. Stock Browser tab view style

* framework-res.apk

- /res/values/dimens.xml : change thumbnail size to..

<dimen name="thumbnail_height">160.0dip</dimen>
<dimen name="thumbnail_width">240.0dip</dimen>

* SystemUI.apk

- /res/values/bools.xml

<bool name="config_recents_thumbnail_image_fits_to_xy">true</bool>

- /res/values/colors.xml

<color name="status_bar_recents_app_label_color">#ffbdbdbd</color>

- /res/values/drawables.xml

<item type="drawable" name="status_bar_recents_background_solid">#ff202020</item>
<item type="drawable" name="status_bar_recents_app_thumbnail_background">#ff333333</item>

- /res/layout/status_bar_no_recent_apps.xml

<TextView android:textSize="20.0dip" android:textColor="[COLOR="Blue"]@color/status_bar_recents_app_label_color[/COLOR]" android:gravity="center_horizontal" android:layout_gravity="center" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/status_bar_no_recent_apps" />

- /res/layout-port/status_bar_recent_item.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout android:paddingTop="15.0dip" android:paddingBottom="15.0dip" android:layout_width="fill_parent" android:layout_height="wrap_content"
xmlns:android="http://schemas.android.com/apk/res/android">
<RelativeLayout android:layout_gravity="center_horizontal" android:id="@id/recent_item" android:layout_width="wrap_content" android:layout_height="wrap_content">
<TextView android:textSize="@dimen/status_bar_recents_app_label_text_size" android:textColor="@color/status_bar_recents_app_label_color" android:ellipsize="marquee" android:id="@id/app_label" android:background="@drawable/nyandroid11" android:paddingLeft="10.0dip" android:paddingTop="5.0dip" android:fadingEdge="none" android:fadingEdgeLength="0.0dip" android:layout_width="240.0dip" android:layout_height="32.0dip" android:layout_marginLeft="0.0dip" android:scrollHorizontally="true" android:singleLine="true" android:layout_alignTop="@id/app_icon" android:layout_alignParentLeft="true" />
<FrameLayout android:id="@id/app_thumbnail" android:background="@drawable/status_bar_recents_app_thumbnail_background" android:visibility="invisible" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="0.0dip" android:foreground="@drawable/recents_thumbnail_fg" android:layout_below="@id/app_label">
<ImageView android:id="@id/app_thumbnail_image" android:paddingLeft="1.0dip" android:paddingRight="1.0dip" android:layout_width="231.0dip" android:layout_height="160.0dip" />
</FrameLayout>
<View android:id="@id/recents_callout_line" android:visibility="gone" android:background="@drawable/recents_callout_line" android:layout_width="@dimen/status_bar_recents_app_label_width" android:layout_height="1.0dip" android:layout_marginLeft="@dimen/status_bar_recents_app_label_left_margin" android:layout_marginTop="3.0dip" android:layout_marginRight="3.0dip" android:layout_toLeftOf="@id/app_thumbnail" android:layout_below="@id/app_label" android:layout_alignParentLeft="true" />
<ImageView android:id="@id/app_icon" android:visibility="gone" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="@dimen/status_bar_recents_app_icon_left_margin" android:layout_marginTop="@dimen/status_bar_recents_app_icon_top_margin" android:scaleType="centerInside" android:adjustViewBounds="true" android:maxWidth="@dimen/status_bar_recents_app_icon_max_width" android:maxHeight="@dimen/status_bar_recents_app_icon_max_height" android:layout_toRightOf="@id/app_label" />
<TextView android:textSize="@dimen/status_bar_recents_app_description_text_size" android:ellipsize="marquee" android:id="@id/app_description" android:visibility="gone" android:fadingEdge="horizontal" android:fadingEdgeLength="@dimen/status_bar_recents_fading_edge_length" android:layout_width="@dimen/status_bar_recents_app_label_width" android:layout_height="wrap_content" android:layout_marginLeft="@dimen/status_bar_recents_app_label_left_margin" android:layout_marginTop="3.0dip" android:scrollHorizontally="true" android:singleLine="true" android:layout_below="@id/recents_callout_line" android:layout_alignParentLeft="true" />
</RelativeLayout>
</FrameLayout>

- /res/layout-port/status_bar_recent_panel.xml

<com.android.systemui.recent.RecentsVerticalScrollView android:layout_gravity="bottom|left|center" android:id="@id/recents_container" android:scrollbars="none" android:fadingEdge="none" android:fadingEdgeLength="0.0dip" android:clipChildren="false" android:clipToPadding="false" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginRight="0.0dip" android:stackFromBottom="true" android:divider="@null">

- /res/layout-land/status_bar_recent_item.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout android:paddingLeft="15.0dip" android:paddingRight="15.0dip" android:layout_width="wrap_content" android:layout_height="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android">
<RelativeLayout android:layout_gravity="center_vertical" android:id="@id/recent_item" android:layout_width="wrap_content" android:layout_height="wrap_content">
<TextView android:textSize="@dimen/status_bar_recents_app_label_text_size" android:textColor="@color/status_bar_recents_app_label_color" android:ellipsize="marquee" android:id="@id/app_label" android:background="@drawable/nyandroid11" android:paddingLeft="10.0dip" android:paddingTop="5.0dip" android:fadingEdge="none" android:fadingEdgeLength="0.0dip" android:layout_width="240.0dip" android:layout_height="32.0dip" android:layout_marginLeft="0.0dip" android:scrollHorizontally="true" android:singleLine="true" android:layout_alignTop="@id/app_icon" android:layout_alignParentLeft="true" />
<FrameLayout android:id="@id/app_thumbnail" android:background="@drawable/status_bar_recents_app_thumbnail_background" android:visibility="invisible" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="0.0dip" android:foreground="@drawable/recents_thumbnail_fg" android:layout_below="@id/app_label">
<ImageView android:id="@id/app_thumbnail_image" android:paddingLeft="1.0dip" android:paddingRight="1.0dip" android:layout_width="231.0dip" android:layout_height="160.0dip" />
</FrameLayout>
<View android:id="@id/recents_callout_line" android:background="@drawable/recents_callout_line" android:visibility="gone" android:layout_width="@dimen/status_bar_recents_app_label_width" android:layout_height="1.0dip" android:layout_marginLeft="@dimen/status_bar_recents_app_label_left_margin" android:layout_marginTop="3.0dip" android:layout_marginRight="3.0dip" android:layout_toLeftOf="@id/app_thumbnail" android:layout_below="@id/app_label" android:layout_alignParentLeft="true" />
<ImageView android:id="@id/app_icon" android:visibility="gone" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="@dimen/status_bar_recents_app_icon_left_margin" android:layout_marginTop="@dimen/status_bar_recents_app_icon_top_margin" android:scaleType="centerInside" android:adjustViewBounds="true" android:maxWidth="@dimen/status_bar_recents_app_icon_max_width" android:maxHeight="@dimen/status_bar_recents_app_icon_max_height" android:layout_toRightOf="@id/app_label" />
<TextView android:textSize="@dimen/status_bar_recents_app_description_text_size" android:ellipsize="marquee" android:id="@id/app_description" android:visibility="gone" android:fadingEdge="horizontal" android:fadingEdgeLength="@dimen/status_bar_recents_fading_edge_length" android:layout_width="@dimen/status_bar_recents_app_label_width" android:layout_height="wrap_content" android:layout_marginLeft="@dimen/status_bar_recents_app_label_left_margin" android:layout_marginTop="3.0dip" android:scrollHorizontally="true" android:singleLine="true" android:layout_below="@id/recents_callout_line" android:layout_alignParentLeft="true" />
</RelativeLayout>
</FrameLayout>

- /res/layout-land/status_bar_recent_panel.xml

<com.android.systemui.recent.RecentsHorizontalScrollView android:layout_gravity="bottom|left|center" android:orientation="horizontal" android:id="@id/recents_container" android:scrollbars="none" android:fadingEdge="none" android:fadingEdgeLength="0.0dip" android:clipChildren="false" android:clipToPadding="false" android:layout_width="wrap_content" android:layout_height="fill_parent" android:layout_marginRight="@dimen/status_bar_recents_right_glow_margin" android:stackFromBottom="true" android:divider="@null">

and download this : http://www.mediafire.com/?lh8fnlrupr74w4s

this zip contain app label background image. extract this to /res/drawable-nodip/ and replace original png file.

and because of this, you'd better to edit nyandroid_anim.xml too..

- res/drawable/nyandroid_anim.xml

[COLOR="Red"]- <item android:duration="80" android:drawable="@drawable/nyandroid11" />[/COLOR]

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