Josh's Brain

E-ink screens show only black and white, but can effectively show grayscale using dithering. Internally the screens use a full color frame buffer, so colors should be specified the same as normal.

Fill the background with white using a single large bitmap

# fill the background with white
background_bitmap = displayio.Bitmap(WIDTH, HEIGHT, 1)
# Map colors in a palette
palette = displayio.Palette(1)
palette[0] = WHITE # 0xffffff
# Create a Tilegrid with the background and put in the displayio group
t = displayio.TileGrid(background_bitmap, pixel_shader=palette)
group.append(t)

Then set the color of labels to be BLACK as 0x000000.