I use mermaid for basic diagram rendering within my markdown documentation aside my code. I found this online editor useful to edit this while having a preview. This proposes to change theme (default and forest works).
How can I set theme when I copy paste this into my markdown document ?
I was looking for the same as you, so after taking a look and digging in Mermaid source code could find these code snippet:
for (const themeName of ['default', 'forest', 'dark', 'neutral']) {
themes[themeName] = require(`./themes/${themeName}/index.scss`)
}
So, after testing in their editor, these themes are working fine:
You can find their themes here in case you want to build your custom themes: https://github.com/knsv/mermaid/tree/master/src/themes
If you go to Mermaid online editor, you can change the theme to those mentioned above: