import shutil


def red_green(tmpdir):
    """A temporary directory containing copies of red.tif, green.tif."""
    for filename in ['tests/data/red.tif', 'tests/data/red.tif.ovr', 'tests/data/green.tif', 'tests/data/green.tif.ovr']:
        shutil.copy(filename, str(tmpdir))
    return tmpdir