The terminology (linear versus planar) is taken straight from the winsomely named Tile Molester, as are its default palettes where the image is < 15bpp. Meanwhile, Firefox’s colouration really did come out like that untweaked.
Please let me know if your browser has any trouble with the gallery page, especially with the information that appears when mouse-hovering over images. (Well, unless you’re using a mobile browser that precludes hovering anyway.) For those with scant bandwidth, please be warned that the page is over 17MB large.