diff --git a/java/res/values/attrs.xml b/java/res/values/attrs.xml
index 475e92f..aa505e1 100644
--- a/java/res/values/attrs.xml
+++ b/java/res/values/attrs.xml
@@ -74,6 +74,7 @@
         <!-- Size of the text for spacebar language label, in the proportion of key height. -->
         <attr name="languageOnSpacebarTextRatio" format="fraction" />
         <attr name="languageOnSpacebarTextColor" format="color" />
+        <attr name="languageOnSpacebarTextShadowRadius" format="float" />
         <attr name="languageOnSpacebarTextShadowColor" format="color" />
         <!-- Background image for the spacebar. -->
         <attr name="spacebarBackground" format="reference" />
diff --git a/java/res/values/colors.xml b/java/res/values/colors.xml
index dabb4d6..baa0887 100644
--- a/java/res/values/colors.xml
+++ b/java/res/values/colors.xml
@@ -26,7 +26,6 @@
     <color name="suggested_word_color_ics">#B233B5E5</color>
     <color name="highlight_translucent_color_ics">#9933B5E5</color>
     <color name="key_text_color_holo">@android:color/white</color>
-    <color name="key_text_shadow_color_holo">@android:color/transparent</color>
     <color name="key_text_inactivated_color_holo">#66E0E4E5</color>
     <color name="key_hint_letter_color_holo">#80000000</color>
     <color name="key_hint_label_color_holo">#A0FFFFFF</color>
diff --git a/java/res/values/themes-ics.xml b/java/res/values/themes-ics.xml
index 616dbd8..d7943ee 100644
--- a/java/res/values/themes-ics.xml
+++ b/java/res/values/themes-ics.xml
@@ -56,8 +56,8 @@
         <item name="keyShiftedLetterHintInactivatedColor">@color/key_shifted_letter_hint_inactivated_color_holo</item>
         <item name="keyShiftedLetterHintActivatedColor">@color/key_shifted_letter_hint_activated_color_holo</item>
         <item name="keyPreviewTextColor">@color/key_text_color_holo</item>
-        <item name="keyTextShadowColor">@color/key_text_shadow_color_holo</item>
-        <item name="keyTextShadowRadius">0.0</item>
+        <!-- A negative value to disable key text shadow layer. -->
+        <item name="keyTextShadowRadius">-1.0</item>
     </style>
     <style
         name="MainKeyboardView.ICS"
@@ -71,6 +71,7 @@
         <item name="autoCorrectionSpacebarLedEnabled">false</item>
         <item name="autoCorrectionSpacebarLedIcon">@drawable/sym_keyboard_space_led_holo</item>
         <item name="languageOnSpacebarTextColor">@color/spacebar_text_color_holo</item>
+        <item name="languageOnSpacebarTextShadowRadius">1.0</item>
         <item name="languageOnSpacebarTextShadowColor">@color/spacebar_text_shadow_color_holo</item>
         <item name="spacebarBackground">@drawable/btn_keyboard_spacebar_ics</item>
     </style>
diff --git a/java/res/values/themes-klp.xml b/java/res/values/themes-klp.xml
index 9bb3d79..13500fe 100644
--- a/java/res/values/themes-klp.xml
+++ b/java/res/values/themes-klp.xml
@@ -56,8 +56,8 @@
         <item name="keyShiftedLetterHintInactivatedColor">@color/key_shifted_letter_hint_inactivated_color_holo</item>
         <item name="keyShiftedLetterHintActivatedColor">@color/key_shifted_letter_hint_activated_color_holo</item>
         <item name="keyPreviewTextColor">@color/key_text_color_holo</item>
-        <item name="keyTextShadowColor">@color/key_text_shadow_color_holo</item>
-        <item name="keyTextShadowRadius">0.0</item>
+        <!-- A negative value to disable key text shadow layer. -->
+        <item name="keyTextShadowRadius">-1.0</item>
     </style>
     <style
         name="MainKeyboardView.KLP"
@@ -71,6 +71,7 @@
         <item name="autoCorrectionSpacebarLedEnabled">false</item>
         <item name="autoCorrectionSpacebarLedIcon">@drawable/sym_keyboard_space_led_holo</item>
         <item name="languageOnSpacebarTextColor">@color/spacebar_text_color_holo</item>
+        <item name="languageOnSpacebarTextShadowRadius">1.0</item>
         <item name="languageOnSpacebarTextShadowColor">@color/spacebar_text_shadow_color_holo</item>
         <item name="spacebarBackground">@drawable/btn_keyboard_spacebar_klp</item>
     </style>
diff --git a/java/res/values/themes-lmp.xml b/java/res/values/themes-lmp.xml
index 773da19..41c4d09 100644
--- a/java/res/values/themes-lmp.xml
+++ b/java/res/values/themes-lmp.xml
@@ -56,8 +56,8 @@
         <item name="keyShiftedLetterHintInactivatedColor">@color/key_shifted_letter_hint_inactivated_color_holo</item>
         <item name="keyShiftedLetterHintActivatedColor">@color/key_shifted_letter_hint_activated_color_holo</item>
         <item name="keyPreviewTextColor">@color/key_text_color_holo</item>
-        <item name="keyTextShadowColor">@color/key_text_shadow_color_holo</item>
-        <item name="keyTextShadowRadius">0.0</item>
+        <!-- A negative value to disable key text shadow layer. -->
+        <item name="keyTextShadowRadius">-1.0</item>
     </style>
     <style
         name="MainKeyboardView.LMP"
@@ -71,6 +71,7 @@
         <item name="autoCorrectionSpacebarLedEnabled">false</item>
         <item name="autoCorrectionSpacebarLedIcon">@drawable/sym_keyboard_space_led_holo</item>
         <item name="languageOnSpacebarTextColor">@color/spacebar_text_color_holo</item>
+        <item name="languageOnSpacebarTextShadowRadius">1.0</item>
         <item name="languageOnSpacebarTextShadowColor">@color/spacebar_text_shadow_color_holo</item>
         <item name="spacebarBackground">@drawable/btn_keyboard_spacebar_lmp</item>
     </style>