diff --git a/configs/sam3u-ek/nx/defconfig b/configs/sam3u-ek/nx/defconfig
index bce6f444a28..feb302b271f 100644
--- a/configs/sam3u-ek/nx/defconfig
+++ b/configs/sam3u-ek/nx/defconfig
@@ -190,7 +190,7 @@ CONFIG_BOARD_LOOPSPERMSEC=4768
 CONFIG_DRAM_START=0x20000000
 CONFIG_DRAM_SIZE=32768
 CONFIG_ARCH_HAVE_INTERRUPTSTACK=y
-CONFIG_ARCH_INTERRUPTSTACK=0
+CONFIG_ARCH_INTERRUPTSTACK=1024
 
 #
 # Boot options
@@ -423,9 +423,9 @@ CONFIG_NX_KBD=y
 # Framed Window Borders
 #
 CONFIG_NXTK_BORDERWIDTH=4
-CONFIG_NXTK_BORDERCOLOR1=0
-CONFIG_NXTK_BORDERCOLOR2=0
-CONFIG_NXTK_BORDERCOLOR3=0
+CONFIG_NXTK_BORDERCOLOR1=0x5cb7
+CONFIG_NXTK_BORDERCOLOR2=0x21c9
+CONFIG_NXTK_BORDERCOLOR3=0xffdf
 # CONFIG_NXTK_AUTORAISE is not set
 
 #