colours_to_filter = []
for coltype in allowed_colour_types:
if coltype == 'ALL':
for n in range(0, 215):
colours_to_filter.append(n)
break
if coltype == 'GRAYSCALE':
for n in range(1, 16):
colours_to_filter.append(n)
if coltype == 'METAL':
for n in range(16, 24):
colours_to_filter.append(n)