A Python script to filter out pixels with a red value higher than 30.

Color_Extractor.py

from PIL import Image

im = Image.open('C:\\Users\\Desktop\\HexTest.png')
pix = im.load()

width = im.size[0]
height = im.size[1]

new_im = Image.new('RGB', (width,height), "white")
new_pix = new_im.load()

for y in range(height):
    for x in range(width):
        if pix[x,y][0] < 30:
            new_pix[x,y] = pix[x,y]

new_im.save('C:\\Users\\Desktop\\HexTest_New.png')

print('Done')