Step 1: Download the two files included with this post, unzip the file.
Step 2: Navigate to where you have placed the Ren'py Folder after downloading and open it. In my example I put it in Library/Application Support.
Step 3: Right Click>Get Info on Renpy.
Step 4: Drag the "icon.icns" file from the zip onto the icon in the top left of the Get Info panel.

-When the launcher is closed, it will now use this icon. However, when opened it will revert to the old one. To fix that continue to the next steps.
Step 5: Open launcher/game/images
Step 6: Replace "logo.png" with the one from the zip file.
Your icon will now be replaced both when the Renpy launcher is closed and open. I believe any time the launcher is updated these steps will have to be repeated, unfortunately.
