|from the trailer for season 4 of The Americans|
Vulture's Kathryn VanArendonk wrote a great column about this phenomenon and how this impacts our perception of the shows. VanArendonk compares Halt and Catch Fire and Silicon Valley: both shows are set in the same sunny California region, but because Halt and Catch Fire looks constantly gloomier even in daytime, it registers as a more serious show. This problem compounds itself. We associate bright colors with comedy, and so dramas are rarely brightly colored anymore. Compare this with Mad Men even a few years ago – or any of the USA Network's former crime shows with extremely bright skies.
This seems like a problem from the same well as the orange-and-teal color correction of blockbuster movies. Audiences want dramas and comedies, and the presentation of those genres becomes polarized and exaggerated.