Hexo 默认主题代码高亮是黑色的，如果想换个风格？具体操作如下：
# 修改 highlight.styl 文件，路径
themes/landscape/source/css/_partial/highlight.styl
修改默认代码主题 Tomorrow Night Eighties
highlight-background = #2d2d2d
highlight-current-line = #393939
highlight-selection = #515151
highlight-foreground = #cccccc
highlight-comment = #999999
highlight-red = #f2777a
highlight-orange = #f99157
highlight-yellow = #ffcc66
highlight-green = #99cc99
highlight-aqua = #66cccc
highlight-blue = #6699cc
highlight-purple = #cc99cc
为主题 Tomorrow
highlight-background = #ffffff
highlight-current-line = #efefef
highlight-selection = #d6d6d6
highlight-foreground = #4d4d4c
highlight-comment = #8e908c
highlight-red = #c82829
highlight-orange = #f5871f
highlight-yellow = #eab700
highlight-green = #718c00
highlight-aqua = #3e999f
highlight-blue = #4271ae
highlight-purple = #8959a8
更多详情请参考 tomorrow-theme 修改。