Hello,

1. So, if you want to use the icons open any *existing* Scrivener file *first*. 
Right click/cntrl click on any folder in the file. Say the Manuscript icon. A menu should pop up.

2. Navigate to "Change Icon" (4 from the bottom of the menu)

3. Manage Custom Icons... (Three from the top)

4. A pop up should appear with "Icons in Project" and then another ones that says Icons on Computer. Click The plus below the Icons on computer.

5. Navigate to the zip file and relevant folder and load in those icons. You can shift+click to load all of the png files in. Hit Open.

Miniature versions of the icons should appear in the "Icons on computer" section.

You can hit OK.

Now you can open the custom template with all those shiny icons.

If you would like to change any icons...

1. Right click on the *target* folder you wish to change the icon for.

2. Navigate to "Change Icon" (4 from the bottom of the menu)

3. The Icons will show in Alphabetical order by name in the Main Menu of the "Change Icon Menu", not any of the submenus. I've included extra for a Laser gun and a Historical pistol.

Happy writing!