A black interior door screen blind has been cheaper than the more expensive standard black exterior one for the last year, according to the Home Retailers Association.
The association said that black door screen covers have seen a slight increase in sales compared to the same period last year.
It said that while the price difference was small, it showed that black doors are a more attractive option than white ones for consumers.
A spokesman for the association said the average cost of a black interior screen blind was $30.
The spokesperson said that this was the average price of a standard black door blind in July last year and that the price of the black interior blind had increased from $20 to $30 since the same month last year