Windows Central published a story that Windows XP had a secret theme that looked like Apple's Aqua.

Windows XP had secret theme that looked like Apple's Aqua

Following a leak of Windows XP's source code online, digging through the code has started to turn up surprises. Turns out Microsoft had a secret XP theme that looked a lot like Apple's Aqua interface from 2000.

Windows XP had secret theme that looked like Apple's Aqua