Sorry dude but I don't think many people know unless you ask Toby yourself. Just message him personally or post a comment on one of his video's.
I hoped this helped you a bit, Yours sinceerly Unknown.
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Yogscast_painterly
You download a texture pack, drag it into your texture pack folder, and then select it through Minecraft.
Use the texture pack generator from Painterly. Link in the related links section.
Simply download the texture pack and place the zip file in the texturepacks folder in the .minecraft directory
When you downloaded the texture pack, it should be in a zip file. You have to put the .zip file into the %appdata%>.minecraft>texture packs if you are a mac user: Your Mac id>Library>application support>minecraft>texture packs. Do not use the Library in the macintosh HD Drive. Then you open up minecraft, then you go into texture packs and mods. Then choose the texture pack, then say ok, then play minecraft :)