THE HITCHHIKER'S GUIDE TO THE GALAXY -- ILLUSTRATED SCREENPLAY & SCREENCAP GALLERY
[Zaphod] a small black light lights up in black to let you know you've done it.
[Zaphod] Is it some kind of Galactic hyper hearse?
[Trillian] Maybe the designer had eyes that respond to different wavelengths.
[Arthur] Or had no imagination!
[Marvin] Perhaps he was feeling very depressed.
[Arthur] It's beginning to make me feel spacesick!