How to change colors for vim syntax highlighting when use clang-format style

Note I copied the ./utils/vim/vimrc in llvm source to the default .vimrc in my home directory. If you just want to change the ./utils/vim/vimrc  file, you can do it there.

(1) Open  ~/.vimrc file    (or Open  ./utils/vim/vimrc)
(2) Find and change the following line:
From:
  highlight LongLine ctermbg=DarkYellow  guibg=DarkYellow
To:
  highlight LongLine ctermbg=LightBlue  guibg=DarkYellow