# Trichromat
pal <- colour("bright")
compare(pal(5))

# Deuteranopia
deu <- change(pal, mode = "deuteranopia")
compare(deu(5))

# Protanopia
pro <- change(pal, mode = "protanopia")
compare(pro(5))

# Tritanopia
tri <- change(pal, mode = "tritanopia")
compare(tri(5))

# Achromatopsia
ach <- change(pal, mode = "achromatopsia")
compare(ach(5))
