Trying to help/answer this question on reddit: Confused with palettes.
So you've got an neat (as in evenly distributed columns and rows) image of palette colors.
You just want to create a palette from the image of colors.
You want to generally read the middle pixel of each tile in your image into a color palette so that it'll have the same order as your image.
I guess this script/plug-in can be used as a palette importer from screenshots of a palette shown in other programs.
If you're interested in importing a palette from a file that was exported by GIMP, you might be interested in the Import Palette from File Script/Plug-in
Here's a script that'll help with that. Script Menu Location:
Python-Fu/Palette from Image...
- Open your image of evenly distributed columns and rows of colors in GIMP
- Run script (
Python-Fu/Palette from Image...), Enter a palette name to create with, Select number of columns in your image (default 16), select number of rows in your image (default 16). Click "OK" to run script.
- A new palette will be created with the name you've entered.
Script Options: Sample run: