github theme of vim-airline

github.vim

let s:file = [ '#bd2c00' , '#666666' , 1 , 240 , 'bold' ]

" Normal mode
let s:N1 = [ '#ffffff' , '#6cc644' , 255 , 2   ] " mode
let s:N2 = [ '#ffffff' , '#999999' , 255 , 248 ] " info
let s:N3 = [ '#ffffff' , '#666666' , 255 , 240 ] " statusline

let g:airline#themes#github#normal = airline#themes#generate_color_map(s:N1, s:N2, s:N3, s:file)
let g:airline#themes#github#normal_modified = {
      \ 'info_separator': [ '#999999' , '#333333' , 248 , 232 , '' ] ,
      \ 'statusline':     [ '#ffffff' , '#333333' , 255 , 232 , '' ] ,
      \ }


" Insert mode
let s:I1 = [ '#ffffff' , '#4183c4' , 255 , 4   ]
let s:I2 = [ '#ffffff' , '#999999' , 255 , 248 ]
let s:I3 = [ '#ffffff' , '#666666' , 255 , 240 ]

let g:airline#themes#github#insert = airline#themes#generate_color_map(s:I1, s:I2, s:I3, s:file)
let g:airline#themes#github#insert_modified = {
      \ 'info_separator': [ '#999999' , '#333333' , 248 , 232 , '' ] ,
      \ 'statusline':     [ '#ffffff' , '#333333' , 255 , 232 , '' ] ,
      \ }


" Replace mode
let g:airline#themes#github#replace = copy(g:airline#themes#github#insert)
let g:airline#themes#github#replace.mode           = [ s:I1[0]   , '#bd2c00' , s:I1[2] , 232     , ''     ]
let g:airline#themes#github#replace.mode_separator = [ '#bd2c00' , s:I2[1]   , 232     , s:I2[3] , ''     ]
let g:airline#themes#github#replace_modified       = {
      \ 'info_separator': [ '#999999' , '#333333' , 248 , 232 , '' ] ,
      \ 'statusline':     [ '#ffffff' , '#333333' , 255 , 232 , '' ] ,
      \ }


" Visual mode
let s:V1 = [ '#ffffff' , '#ff9933' , 255 , 3   ]
let s:V2 = [ '#ffffff' , '#999999' , 255 , 248 ]
let s:V3 = [ '#ffffff' , '#666666' , 255 , 240 ]

let g:airline#themes#github#visual = airline#themes#generate_color_map(s:V1, s:V2, s:V3, s:file)
let g:airline#themes#github#visual_modified = {
      \ 'info_separator': [ '#999999' , '#333333' , 248 , 232 , '' ] ,
      \ 'statusline':     [ '#ffffff' , '#333333' , 255 , 232 , '' ] ,
      \ }


" Inactive
let s:IA = [ '#333333' , '#999999' , 232 , 248 , '' ]
let g:airline#themes#github#inactive = airline#themes#generate_color_map(s:IA, s:IA, s:IA, s:file)

this is great! if you initiate a pull request i'd be happy to merge this into the main repo. thanks.