User-supplied backgrounds added from chat.
Converted to PNG and resized to 2550 x 3300 px at 300 DPI.

background_001_art_studio.png
background_002_pirate_treasure.png
background_003_dino_discovery.png
background_004_space_quest.png
background_005_colourlab.png
background_006_rainbow_workshop.png
background_007_monster_mixup.png
background_008_jungle_colour_trail.png
background_009_safari_adventure.png
background_010_robot_rescue.png
