add eink plugin and color scheme

colors/eink.vim

@@ -0,0 +1,7 @@
+set background=light
+hi clear
+if exists("syntax_on")
+  syntax reset
+endif
+
+let colors_name = "eink"

plugin/eink.vim

@@ -0,0 +1,37 @@
+function! s:Eink(bang)
+  if a:bang == '!'
+    exe 'colorscheme' s:c_old
+    let &guicursor = s:gc_old
+    set cursorline
+    if &t_RC != ''
+      call writefile([&t_RC], "/dev/tty", "b")
+    endif
+  else
+    if g:colors_name != 'eink'
+      let s:c_old = g:colors_name
+      let s:gc_old = &guicursor
+    endif
+    colorscheme eink
+    set guicursor=n-v-c:block-Cursor/lCursor-blinkon0,ve:ver35-Cursor,o:hor50-Cursor,i-ci:ver25-Cursor/lCursor-blinkon0,r-cr:hor20-Cursor/lCursor,sm:block-Cursor-blinkwait175-blinkoff150-blinkon175
+    " disable cursor blinking (e.g. in xterm)
+    if &t_RC != ''
+      call writefile(["\033[?12l"], "/dev/tty", "b")
+    endif
+    set t_RC=
+    set nocursorline
+  endif
+endfunction
+command! -bang Eink call s:Eink('<bang>')
+
+function! s:AutoEink(t)
+  if exists('*getwinpos')
+    let x = getwinpos(1000)[0]
+  else
+    let x = getwinposx()
+  endif
+
+  if x >= 1920
+    call s:Eink('')
+  endif
+endfunction
+autocmd VimEnter * call timer_start(100, function('s:AutoEink'))