More vimrc tweaks and cleanups (also a new color scheme)

.vimrc

@@ -5,7 +5,7 @@ set nocompatible                                     " be iMproved, required
 set number                                           " turn on line numbers
 set relativenumber                                   " lines are numbered relative to current line
 set scrolloff=8                                      " number of lines to keep above and below the cursor
-set noerrorbells visualbell t_vb=                    " no sound on errors
+set belloff=all                                      " no sound/flash on errors
 
 set autoread                                         " set to auto read when a file is changed from the outside
 "set cursorcolumn                                     " highlight current column
@@ -19,6 +19,15 @@ set wildmenu
 
 autocmd! bufwritepost .vimrc source ~/.vimrc         " When vimrc is edited, reload it
 
+" Turn line numbers on/off for active/inactive buffers
+augroup BgHighlight
+    autocmd!
+    autocmd WinEnter * set number
+    autocmd WinEnter * set relativenumber
+    autocmd WinLeave * set nonumber
+    autocmd WinLeave * set norelativenumber
+augroup end
+
 syntax enable
 filetype plugin on
 
@@ -85,22 +94,15 @@ call plug#end()
 "set termguicolors
 "colorscheme slate 
 "colorscheme marklar
-colorscheme automation
+"colorscheme automation
+colorscheme advantage
 
 highlight colorcolumn ctermbg=darkgray guibg=darkgray
 highlight VertSplit ctermbg=black guibg=black ctermfg=darkgray guifg=darkgray
 
-" In split windows - active buffer status bar is red, inactive is gray
-highlight statuslinenc ctermbg=darkgray guibg=darkgray
-highlight statusline ctermbg=darkred guibg=darkred
-
-" ---------------------------------------------------------------------------------------------------------------------
-" ==> Autocompletion 
-
-"let s:python_version=3
-"echomsg 'Using python'.s:python_version
-set completeopt=menuone,noinsert,noselect
-set shortmess+=c " Turn off completion messages
+" In split windows - active buffer status bar is yellow, inactive is black
+hi statuslinenc ctermbg=gray ctermfg=black 
+hi statusline ctermbg=black ctermfg=green
 
 " ---------------------------------------------------------------------------------------------------------------------
 " => Statusline
@@ -188,12 +190,8 @@ hi clear SpellCap
 hi clear SpellErrors
 hi clear SpellLocal
 hi clear SpellRare
-"hi SpellBad cterm=underline,bold ctermfg=red
-hi SpellBad cterm=underline ctermbg=black ctermfg=darkred guibg=black guifg=darkred
-"hi SpellCap cterm=underline,bold ctermfg=blue
-hi SpellCap cterm=underline ctermbg=black ctermfg=darkred
-"hi SpellErrors cterm=underline,bold ctermfg=blue
-hi SpellErrors cterm=underline ctermbg=black ctermfg=darkred
+hi SpellBad cterm=underline ctermbg=black ctermfg=red
+hi SpellCap cterm=underline ctermbg=black ctermfg=red
  
 " ---------------------------------------------------------------------------------------------------------------------
 " ==> Spellcheck: only certain file types https://robots.thoughtbot.com/vim-spell-checking
@@ -204,7 +202,6 @@ autocmd BufRead,BufNewFile * setlocal nospell
 autocmd BufRead,BufNewFile *.* setlocal nospell
 " turn on for markdown files
 autocmd BufRead,BufNewFile *.md setlocal spell
-autocmd BufRead,BufNewFile *.mkd setlocal spell
 " turn on for text files
 autocmd BufRead,BufNewFile *.txt setlocal spell