id love to have a exterior called the professors exterior id be like the red telephone booth but blue with white windows so you cant see through it thats my dream exterior 

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Hi there! You can use a resource pack to change exteriors now!! You can make your own custom exterior using Tabula or you can just edit the texture of one to match your needs(the case of your request ).

more info on the matter here:

https://swdteam.com/forum?p=thread&tid=3236&page=1#t_post_id_33722

also hireSWD is an option if textures dont work for you, but it will be put off till the next update or when john has time to add it in

is thare a video on how to make the pack

For a third option, a paintable Wooden exterior is also planned for the future.