Preview GIMP palettes in your terminal

colorpreview.py

#!/bin/env python3
# Requirements: truecolor
# Usage: colorpreview [file]
import truecolor
import sys

assert(len(sys.argv) >= 2)

for filename in sys.argv[1:]:
    with open(filename) as file:
        text = file.read()
        print(filename + ":")
        for line in text.split('\n')[1:]:
            line = line.strip()
            if len(line) == 0 or line[0] == "#": continue

            line = line.split()
            color = list(map(int, line[:3]))
            color_block = truecolor.color_text("  ", background=color)
            print(color_block, "{:3} {:3} {:3}".format(*color), line[3])