Sometimes you want to create a custom syntax and such for an ad-hoc custom filetype.
creating new syntaxes
matchadd is useful for this, without having to dive all the way into syntaxes
plugins useful for working with syntaxes
- SyntaxAttr.vim -- show lots of information about the syntax group and such where the cursor is at
- InteractHL.vim -- helps you interactively generate a colorscheme
- AfterColors.vim -- lets you create small modifications to existing hilight color files, without having to copy the entire thing and modify the whole file