The print setting.
Click to turn this page black and white.
The texts and excavations on this site are naturally in color, but can be changed to black and white for printing or even for viewing purposes. The horizontal line, or rule, just below the main page heading, to which the arrow is pointing above, is clickable. Just click on it to flush all color from the page. Click it again to restore the color.
Pages that have no text with a grey background have only those two steps described above.
Pages that do have text with a grey background have three settings, not two. Click once to turn the page to black and white, and keep the grey. Click again to flush out the grey. Click once more to restore all color. (Flushing the grey out will help save printer ink.)
You may have to wait a split second between clicks.