Unftf
Terrarian
It should work for short world names. If you want some longer world name you can do some work around with a custom styles file described in the main post in "even more advanced: custom style" spoiler.umm...little problem here:the name is not long enough to support all the signs,like,if i name it new world $Ba4Fdy i cannot write any more because that's the maximum name size
you can also add your own custom styles and save combinations from above.
For this type Cx1, Cx2, ... or Cx9 in world file name.
It will create a config file named config1.txt in StartWithBase folder close to your Terraria world files ( or config2.txt if you entered Cx2, last digit is equal in both).
If that file already exists, it will set the values as stored in that file.
So you you can create some world which you will delete afterwards again. Name it e.g. "world" and add the settings you like -> "world$Ba4Fdy" after this add e.g. Cx1 behind to store it an a custom style file -> "world$Ba4FdyCx1". That world name should fit into. Generate this world and it will save the custom style file (if it don't exist). Afterwards you can just add Cx1 behind you world and it will be like "$Ba4Fdy". So e.g. "MyLongWorldName$Cx1" would be "MyLongWorldName$Ba4Fdy". This custom style file is human readable and you can edit it as you like.