How to change spring jump icons in 3.0

[shadowck5000]

I was having trouble changing my spring jump icons to ones i wanted. I use a SB page for my games, my media, my camera etc... I used to just go in and change the stormy black springjumps to my icons but this did not work 3.0.
How to do this is go into var/stash/applications then "_shortcut_X" X for the SB page to jump to and replace the icon.png with your own renaming it "Icon.png"
Hope this helps

[Einstein3000]

can you do it in a theme instead?