I think you are not using the default configuration file "boot.cfg" as colors are black ?I have the same issue here and I haven't tried to change any pictures or use themes, this is the stock 1.6 version from the OP. Attached a picture for reference.
EDIT: I should note that the bottom screen and title on the top one are not due to camera not focusing, that's actually what it looks like. If you see the "File Browser" is in focus okay.
- Could you try to copy the default configuration file to SD and try that ?
- What is the firmware version ? (sysnand/emunand? version?)
Thanks