"But this isn't just about that. This is about the biggest factor in battery consumption: screen brightness! And not only that, but screen colour, too," Slash Gear reported late Thursday.

Dark mode essentially changes the overall colour theme of an operating system (OS) or applications to the colour black.

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During the presentation, the Internet giant added how dark mode can use 43 per cent less power at full brightness than "normal mode" in the YouTube app which traditionally uses a lot of white, according to Business Insider.

The tech giant reportedly acknowledged its mistake of encouraging app developers to use the colour white for their applications, including its own apps.

Since the inception of Google's "Material Design" initiative, the company had been pushing for the use of colour white, thus, encouraging designers to use white as their primary colour for all apps and interfaces.

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