Original PickImageColors TIFF bit-depth experiment, October 9, 2026. One 160x40 unsigned 16-bit grayscale TIFF and two 8-bit RGB PNG controls. Run check-tiff.py with Python and Pillow to read original samples without converting the TIFF to RGB. The 24 actual browser clicks are in live-picker-observations.json. Control formulas are alternatives, not universal color-management rules. The preparation manifest retains its earlier pre-test status. Use the original files, not enlarged diagrams, for sampling.
