This is a theme for MarkEditor1, including two color palettes: light and dark. Since MarkEditor2 is out there, the theme won't be updated anymore.
MarkEditor is a powerful tool for writing with Markdown. Whether you are a writer, blogger, operator or student, it can be the dominant work-station to manage your works, blog posts, notes, todos and many other stuffs.
light theme
dark theme
Just simply copy css code in these two files: light theme, dark theme...
and paste here in preference settings of MarkEditor: