Use a grub theme that integrates reasonably well with the current background picture.

debian/changelog

@@ -38,6 +38,8 @@ live-build (1:20161128) UNRELEASED; urgency=medium
     for the report. Closes: #774807
   * Bump debhelper compat level to 10.
   * Bump Standards-Version to 3.9.8.
+  * Use a grub theme that integrates reasonably well with the current
+    background picture.
 
   [ Kristian Klausen ]
   * Include ext{3,4} journal size when calculating image size. Closes: #801712

scripts/build/binary_syslinux

@@ -308,6 +308,13 @@ then
 	rm -f "${_TARGET}/splash.svg"
 fi
 
+# Tweak the grub theme to reuse the syslinux background image
+if [ -e binary/boot/grub/live-theme/theme.txt ]; then
+    sed -i -e 's|^desktop-image:.*|desktop-image: "/isolinux/splash.png"|' \
+	-e 's|^title-text:.*|title-text: ""|' \
+	binary/boot/grub/live-theme/theme.txt
+fi
+
 case "${LB_MODE}" in
 	progress-linux)
 		for _FILE in "${_TARGET}/isolinux.bin" "${_TARGET}/isolinux.cfg" "${_TARGET}/syslinux.cfg"

share/bootloaders/grub-pc/grub.cfg

@@ -1,24 +1,29 @@
 set default=0
 
+loadfont $prefix/dejavu-bold-16.pf2
+loadfont $prefix/dejavu-bold-14.pf2
 loadfont $prefix/unicode.pf2
 set gfxmode=auto
 insmod all_video
 insmod gfxterm
-terminal_output gfxterm
-
 insmod png
-insmod tga
 
-if [ -e /isolinux/splash.png ] ; then
-  background_image /isolinux/splash.png
-  set color_normal=light-gray/black
-  set color_highlight=white/black
+set color_normal=light-gray/black
+set color_highlight=white/black
+
+if [ -e /isolinux/splash.png ]; then
+    # binary_syslinux modifies the theme file to point to the correct
+    # background picture
+    set theme=/boot/grub/live-theme/theme.txt
+elif [ -e /boot/grub/splash.png ]; then
+    set theme=/boot/grub/live-theme/theme.txt
 else
-  background_image /boot/grub/splash.tga
-  set menu_color_normal=cyan/blue
-  set menu_color_highlight=white/blue
+    set menu_color_normal=cyan/blue
+    set menu_color_highlight=white/blue
 fi
 
+terminal_output gfxterm
+
 insmod play
 play 960 440 1 0 4 440 1
 

share/bootloaders/grub-pc/live-theme/theme.txt

@@ -0,0 +1,51 @@
+desktop-image: "../splash.png"
+title-color: "#ffffff"
+title-font: "DejaVu Sans Bold 16"
+title-text: "Live Boot Menu with GRUB"
+message-font: "Unifont Regular 16"
+terminal-font: "Unifont Regular 16"
+
+#help bar at the bottom
++ label {
+        top = 100%-50
+        left = 0
+        width = 100%
+        height = 20
+        text = "@KEYMAP_SHORT@"
+        align = "center"
+        color = "#ffffff"
+	font = "DejaVu Sans Bold 14"
+}
+
+#boot menu
++ boot_menu {
+        left = 10%
+        width = 80%
+        top = 52%
+        height = 48%-80
+        item_color = "#a8a8a8"
+	item_font = "DejaVu Sans Bold 14"
+        selected_item_color= "#ffffff"
+	selected_item_font = "DejaVu Sans Bold 14"
+        item_height = 16
+        item_padding = 0
+        item_spacing = 4
+	icon_width = 0
+	icon_heigh = 0
+	item_icon_space = 0
+}
+
+#progress bar
++ progress_bar {
+        id = "__timeout__"
+        left = 15%
+        top = 100%-80
+        height = 16
+        width = 70%
+        font = "DejaVu Sans Regular 14"
+        text_color = "#000000"
+        fg_color = "#ffffff"
+        bg_color = "#a8a8a8"
+        border_color = "#ffffff"
+        text = "@TIMEOUT_NOTIFICATION_LONG@"
+}