GIMP Palette
Name: HW ZX Spectrum
Columns: 8
# https://en.wikipedia.org/wiki/List_of_8-bit_computer_hardware_palettes#ZX_Spectrum
  0   0   0	0 - black
  0   0 170	1 - basic blue
170   0   0	2 - basic red
170   0 170	3 - basic magenta
  0 170   0	4 - basic green
  0 170 170	5 - basic cyan
170 170   0	6 - basic yellow
170 170 170	7 - basic white
  0   0   0	8 - black
  0   0 255	9 - bright blue
255   0   0	10 - bright red
255   0 255	11 - bright magenta
  0 255   0	12 - bright green
  0 255 255	13 - bright cyan
255 255   0	14 - bright yellow
255 255 255	15 - bright white