Telstra has painted itself black in an effort to go green by replacing its 36,000 colourful screensavers with black screens.
Corporate screensavers, previously used to deliver messages to staff, were replaced with plain black screens in what the company says is a message to staff to go green.
Telstra public policy head Dr Phil Burgess said the move will cut the company's carbon dioxide footprint by 646 tonnes a year.
"Telstra has a commitment to provide good stewardship of the environment, first and foremost by conservation. Removing screensavers from our computers is a simple initiative, however the financial and environmental benefits are significant," Burgess said.
Modern CRT and LCD monitors do not require screensavers.