Short answer
No study has tested the causes, so every explanation here is an interpretation. The best-supported driver is materials: steel, aluminium and plastics are grey or moulded in grey and black, replacing warm wood and brass. Others are plausible but unmeasured: long-lived purchases that must suit many future owners, global products designed for every market at once, the 'premium technology' look of silver and black, and the cost of offering many colours.
The one systematic study of object colour over time, the Science Museum Group analysis, links rising grey and falling brown and yellow to a change of materials — wood giving way to plastic. That fits the physical facts. Natural materials used for objects before industrialisation (timber, brass, leather, horn, ceramic glazes) are mostly warm and mid-toned. Industrial materials are grey or silver in their raw state, and moulded plastics are cheapest in black, grey and white: carbon black and titanium dioxide are the two most widely used pigments, they hide variations in recycled feedstock, and they do not date a product to a fashion season. This is an interpretation built on one study plus manufacturing knowledge, not a measured decomposition.
Objects that last many years and change hands tend to be neutral. Cars are the clearest case: bought through fleets and leasing firms, resold two or three times, and offered by manufacturers in short colour lists weighted towards what sells. Houses for rent or sale are painted neutral for the next occupant. Kitchen appliances outlive several redecorations. In each case the colour is chosen to suit an unknown future owner and room, which favours colours that go with anything. The resale evidence is weak — in the largest recent car study white and black lost slightly more value than average — so this may be more about perceived risk than actual cost.
Silver, black and grey came to signal technology and quality. DuPont's colour marketers tied silver's rise around 2000 to its association with high-tech equipment and precision, and later linked black effect finishes to luxury. Consumer electronics set that aesthetic from the 1990s onwards and it spread to cars, appliances and tools. At the same time products are increasingly designed once for many markets; DuPont's 2009 release described colour preferences converging across regions. A single global colour range favours colours acceptable everywhere, which again means neutrals. These are the industry's own explanations, useful as evidence of what designers believed, but not tests of what buyers wanted.
Testing any of these drivers would need data nobody publishes together: what was offered, what was chosen when choice existed, at what price, and by whom. Share data measures only what was produced. The same neutral dominance could come from buyers' preferences, from manufacturers' narrowing of choice, or from fleets' bulk orders, and the reports cannot separate them. Where choice has widened — LEGO's and Crayola's ranges, the recent growth of green and blue on cars — neutral dominance in expensive, long-lived goods has persisted, which suggests risk-aversion in big purchases matters more than any loss of taste for colour.
| Proposed driver | Where it applies | Best evidence | Status |
|---|---|---|---|
| Shift to industrial materials and plastics | Objects, appliances, electronics | Science Museum Group object study | Supported by one study; mechanism plausible |
| Resale and many future owners | Cars, rented and for-sale homes | iSeeCars depreciation data (shows no neutral premium) | Widely believed; weakly supported |
| Fleet and bulk buying | Cars | DuPont attributes North American white to fleets | Industry explanation; unmeasured |
| Technology and luxury signalling | Electronics, cars | DuPont marketers' statements | Industry explanation; unmeasured |
| Global products and converging preferences | Cars, electronics | DuPont 2009 release | Industry explanation; regional differences persist |
| Cost of offering many colours | Cars, appliances | None published | Plausible; unmeasured |
Why: Explanations from industry marketing or a single study are repeated as settled fact.
Fix: Label drivers as proposed, name who proposed them, and say what evidence would test them.
Each statement is labelled by kind — established fact, a standard’s requirement, observed market data, a convention, or Colourwise’s own interpretation or analysis — with the strength of the evidence behind it.
FactModerate evidence
The Science Museum Group analysis attributes the rise of grey and fall of brown and yellow in its object photographs mainly to a change in materials, such as the move away from wood towards plastic.
Caveat: The attribution is the author's suggestion, not a tested result.
FactLimited evidence
DuPont's colour marketers linked silver's early-2000s popularity to consumers' association of the colour with high-tech equipment, precision and performance.
Caveat: An industry interpretation reported in trade press, not a consumer study.
Source: 50th DuPont Color Popularity Report (coverage of the 2002 report)
FactLimited evidence
DuPont's 2009 report described colour preferences as converging and becoming more homogeneous across regions, while noting distinct regional differences remained.
Caveat: A qualitative statement in a paint supplier's release.
Source: Silver Gleams in First-Ever DuPont Global Color Rankings for 2009
Colourwise interpretationLimited evidence
Neutral dominance in cars and durable goods is best explained by risk-aversion in long-lived, resold purchases combined with the colours of industrial materials, rather than by a general loss of taste for colour.
Based on: Colourwise's reading of the car share data, the Science Museum Group finding, the iSeeCars resale analysis and the growth of colour ranges in cheaper product categories.
Caveat: No study tests these drivers against each other.
Reviewed 29 September 2026. Colourwise summarises its sources in its own words and does not reproduce standards text or proprietary colour data. Spotted an error? Tell us.