The old Roblox Studio logo, but in the style of the new one. You can apply it to your shortcuts in properties and to the program using Resource Hacker.
Preview
Btw made in paint.net
Tutorial
NOTE: I already did all this, so the icon is already changed.
Start by finding Roblox Studio.
Now open Resource Hacker. You should see this:
Drag RobloxStudioBeta into Resource Hacker to open it in Resource Hacker. You’ll have to do the same process for RobloxStudioBetaLauncher. You’ll need to right click on Icon and click Replace Icon.
You should be greeted by this menu:
Select the ICO file and click Replace. To save your work, press one of the floppy disks at the top. Once you do both programs, you should be done. If you have Roblox Studio pinned to the taskbar, then right click the icon, and then right click the name.
Click Properties. You shall see this new menu:
Browse to the new icon and select it.
You can now apply! Restart explorer to see your new icon!