If you’re using an older version, you need to update the Windows 10 OS. Note: Microsoft added this feature in Windows 10 in 2019. Now, you don’t need to download and install custom cursors from the web.
The new version of Windows 10 gives an option to customize the cursor/pointer color. In the previous versions of Windows OS, there was no inbuilt option available to change the pointer color but offered white and black themes for pointers.