Change Windows 10 folder icons with *.ico file

Windows 10 features really nice folder icons which look very stylish and modern. Folder icons were changed for the first time since Windows Vista. They look similar to the icons in Windows Vista/7/8 however they are flatter looking yet retain the richness of colors. However, if you get bored with these new icons, you might want to replace the standard folder icons with a custom icon from an external ICO file. Here's how it can be done.