106.07.16 vim airline warning section highlight

主要是右邊兩塊
然後我就跟theme一樣一邊參考別人的一邊再重做一個

完整程式碼在此ouo.vim
我盡量註解了
前景背景粗體都可以改


主要是加入以下來呈現，詳細就去完整版看吧

let s:W = [s:gui_warningfg, s:gui_warningbg, s:cterm_warningfg, s:cterm_warningbg, 'bold']
let s:E = [s:gui_errorfg, s:gui_errorbg, s:cterm_errorfg, s:cterm_errorbg, 'bold']

let g:airline#themes#ouo#palette.normal.airline_warning = s:W
let g:airline#themes#ouo#palette.normal.airline_error = s:E
let g:airline#themes#ouo#palette.normal_modified = {
    \ 'airline_c': [s:gui_alert, s:gui_termbg2, s:cterm_alert, s:cterm_termbg2, 'bold'],
    \ 'airline_warning': s:W,
    \ 'airline_error': s:E}

參考資料：
kbenzie/fresh.vim
Q: Change color of ycm warning part #1082