
Transitioning from Mac to Windows can be a design shock for many users. The interface is starkly different, prompting complaints from those accustomed to the Mac aesthetic. Yet, the debate over which interface reigns supreme is futile. If you're accustomed to the Mac interface, why not transform Windows to mirror it?

macOS Big Sur offers a magnificent theme, converting the Windows interface into macOS. From the notification center to Launchpad, lock screen, and window control buttons located in the top-left corner, it replicates macOS faithfully. Overall, it's quite impeccable, though some may find the altered options disconcerting.
2. Desktop by Jonatica-andl

While the name may seem unassuming, a glance at Desktop reveals its sheer allure. This theme is essentially sleek and beautiful, with taskbar icons centralized into a Mac-like dock, exuding sophistication. The screen also displays essential information such as CPU, memory, and disk usage, along with Internet speed. Google's search bar is also a splendid utility.
3. cakeOS

A fusion of vibrant buttons and icons, cakeOS presents a sophisticated theme for those seeking to spice up their Windows 10 experience. It's hard to compare cakeOS to anything else, except to say that it showcases eye-catching bubble-like buttons, evoking a classic vibe. Even the Start button undergoes a lively transformation.
4. GreyEveTheme

Among the most stunning 'dark' themes of late, GreyEveTheme renders Windows 10 much easier on the eyes with its black and gray color scheme. For those finding white backgrounds too glaring, this is the theme for you.
Note that this theme does not entail any changes to the interface or design; it simply offers a neat dark mode.
5. Windows XP

Let's dive into the most nostalgic and beloved theme in Windows history - Windows XP. Isn't that iconic blue taskbar and scenic background appealing? To achieve the Windows XP interface, you'll first need Classic Shell, providing the necessary customization tools for Windows 10. Then, you can download the Classic Shell XP pack for Windows 10 to equip the XP interface.
6. Penumbra

Similar to other themes mentioned by Mytour in the remainder of this list, Penumbra isn't produced by Microsoft. You'll need to apply the above patches first and manually place the theme files in the correct directory. But once set up, Penumbra is a gorgeous dark theme that makes using your system at night more enjoyable.
7. Arc

Arc includes several variations of its core black and white theme. For maximum effectiveness, you'll want to install the Arc icon pack alongside the theme, also available from DeviantArt.
8. Simplify 10

Simplify 10 is essentially a compilation of Windows 10 themes, all with a common trait: simplicity. It streamlines the Windows interface to the fullest extent, relying on subtle variations of gray and white to differentiate various parts of the user interface. It also shrinks window control buttons, although you may not need that.
9. LAB

The main change of LAB is a bold black bar running across the title of each window. You'll find everything on the screen becoming clearer and more consistent.
10. Anthem Two

Similar to LAB, Anthem Two also adds a black bar atop all themed windows. However, it lacks the strong contrast of LAB, making it slightly easier on the eyes.
If you're someone who appreciates creativity or enjoys exploring new things, these Windows 10 themes will suit you well. Just make sure to follow the installation steps carefully to avoid any glitches!