Young people are much more likely to dream in color, Japanese researchers report - and one reason could be the spread of color television.
The team surveyed over 1,300 people twice, sixteen years apart. And just one in five people in their 60s reported dreaming in color, compared with 80 percent of those under 30.
"The frequency of dreaming in color increased from 1993 to 2009 only for respondents in their 20s, 30s, and 40s," they say.
In Japan, people who were younger than 20 at the start of the study in 1993 are likely to have been watching color television all their lives.
"We speculate that color TV may play a role in the generational difference observed," they say.
However, according to the researchers, it's been noted before that older people are more likely to dream in black and white. Their results indicate that the introduction of color television played a comparatively small part. But it does mean that, maybe, more of us will be dreaming in color in our old age than our poor old parents.
Indeed, maybe even they have an advantage over previous generations. Any centenarians out there may be dreaming not only in black and white, but in silence, with tinkly piano music and title cards instead.