For those of you that have wondered about this:
CALVIN: Dad, how come old
photographs are always
black and white? Didn't they have
color film back then?
CALVIN'S DAD: Sure they did. In fact, those
old photographs are in
color. It's just the
world was black and white then.
CALVIN: Really?
CALVIN'S DAD: Yep. The world didn't turn color until sometime in the
1930s, and it was pretty
grainy color for a while, too.
CALVIN: That's really weird.
CALVIN'S DAD: Well,
truth is
stranger than fiction.
CALVIN: But then why are old
paintings in color?! If
the world was black and white, wouldn't artists have painted it that way?
CALVIN'S DAD: Not necessarily, a lot of great
artists were
insane.
CALVIN: But ... but how could they have painted in color anyway? Wouldn't their
paints have been
shades of gray back then?
CALVIN'S DAD: Of course, but they turned colors like everything else in the
'30s.
CALVIN: So why didn't old
black and white photos turn color too?
CALVIN'S DAD: Because they were color pictures of black and white, remember?
(CUT TO: EXT. Tree limb, Calvin talking with Hobbes)
CALVIN:
The world is a complicated place,
Hobbes.
HOBBES: Whenever it seems that way, I take a
nap in a
tree and wait for
dinner.