Thanks to Gertjan's tip and dima_tr's thread on Font Smoothing, I figured out how to install a script that replaces /usr/share/uds/no_bookmark_overlay.png with a transparent png. You must first upgrade to the latest firmware. Here's what I did. It' not pretty but it got the job done.
1. Connect your DR800 to your PC and open it as you would an external drive.
2. Create a folder called Programs.
3. Inside the Programs folder, create a text file called copyoverlay.desktop and type the following code. This is the launcher that will call the script.
[Desktop Entry]
Name=Copy Bookmark Overlays
Comment=Copy bookmark overlays to this directory
Type=Application
Exec=/media/mmcblk0p1/Programs/_copyoverlay/copyoverlay.sh
4. Inside the Programs folder, create a folder called _copyoverlay
5. Inside _copyoverlay create a text file called copyoverlay.sh and type the following code to copy the overlay files to the program folder.
#/bin/sh
P=/media/mmcblk0p1/Programs/_copyoverlay
FILE=/usr/share/uds
cp $FILE/bookmark_overlay.png $P
cp $FILE/no_bookmark_overlay.png $P
7. Eject/Safely remove your DR800.
8. Unplug your DR800 from your PC.
9. Navigate to the SD Card icon on the Home screen, go to Programs, and click on copyoverlay.desktop
10. Nothing will appear to have happened. Now plug your DR800 into your PC and check the Programs/_copyoverlay folder. You'll see the two bookmark overlay files.
11. Make a backup copy of the overlay files.
12. Edit the no_bookmark_overlay.png file so that it contains a transparent pgn, leaving it 73 x 73 pixles.
13. Edit the copyoverlay.sh file on your DR800 so it reads:
#/bin/sh
P=/media/mmcblk0p1/Programs/_copyoverlay
FILE=/usr/share/uds
cp $P/no_bookmark_overlay.png $FILE
14. Eject/Safely remove your DR800.
15. Once more navigate to the SD Card icon on the Home screen, go to Programs, and click on copyoverlay.desktop, replacing the pgn with your edited image.
I am extremely happy with my tweaked DR800. Thank you Gertjan. It's a terrific device with a lot of possibilities!
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