PNG Requirements

General: PNG must be saved in indexed mode.

GIMP: Import the .gpl as your palette and enable alpha layer. Functionally pixels with transparency will become indexed to #0.

Aseprite: Import the .png as your palette, the magenta in slot #0 will be treated as transparent while in indexed mode by default.

Note: The colors of your palette don't actually matter, we only care about the index number. Below is the default colors and how they're converted.

Conversion Chart

• TRANSPARENT 0 -> 0xFF
• BLACK 1 -> 0
• BLUE 2 -> 1
• GREEN 3 -> 2
• CYAN 4 -> 3
• RED 5 -> 4
• PURPLE 6 -> 5
• BROWN 7 -> 6
• LTGRAY 8 -> 7
• DKGRAY 9 -> 8
• LTBLUE 10 -> 9
• LTGREEN 11 -> 10
• LTCYAN 12 -> 11
• LTRED 13 -> 12
• LTPURPLE 14 -> 13
• YELLOW 15 -> 14
• WHITE 16 -> 15