Don't even bother activating #windows. It's so easy to get all the locked features without paying or using some weird activator (a thread)

First, we need to get rid of that ugly watermark. Just edit PaintDesktopVersion's value located at "HKEY_CURRENT_USER\\Control Panel\\Desktop" using regedit. Set it to 0

We still can't change our theme and wallpaper which sucks. Fortunately, we can do change these the same way we did when we got rid of that pesky watermark

To enable dark mode, just browse to "Computer\\HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize
" and change these two entries' value to 0. As soon as you change them, dark mode will be activated! (how amazing)

Changing your wallpaper is even easier. Just download the wallpaper of your choice and....

Sadly, we still have that ugly blue accent color next to our amazing new wallpaper. That's also fixable using a quick registry hack. Just browse to "Computer\\HKEY_CURRENT_USER\\Control Panel\\Desktop", create a new DWORD, call it AutoColorization, and set it to 1.

You'd have to restart explorer for the previous tweak. Next, we might want to color.

Now, you might want to color your taskbar. That's yet another registry hack. Browse back to "HKEY_CURRENT_USER\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize
" and modify ColorPrevalence

This can take a few values. They are the following:
1 = color start, taskbar and action center
2 = color taskbar only

Do you want a colored title bar? Change the ColorPrevalence value in "Computer\\HKEY_CURRENT_USER\\SOFTWARE\\Microsoft\\Windows\\DWM" to 1 and here you go.

Literally the only locked down options in Windows can be easily modified using regedit, a built in Windows tool