A GE-JP player has kindly made his green Aojiru UI skin available. Go to 少年は荒野をめざす: Skin to find the download links and passwords. There are 2 packs included there, one for v5.x and another older one for v4.x.
- Go to 少年は荒野をめざす: Skin to get the password for the desired version.
- Go to GetUploader: Cocoasyounen to access the folder containing the .zip files.
- Click on the .zip file name of the desired version - v1.00 is for v5.x client and old is for v4.x client.
- Enter the download password as specified on the Japanese blog (Step #1).