How do I change the colors, fonts, and general layout of my Listed blog?

You can use CSS to stylize your blog as you see fit.

To stylize your blog with custom CSS:

1. Create a new note in Standard Notes, and call it theme.css (name can be anything).
2. Use the following metadata structure, overriding any of the variables with your desired color values.

---
metatype: css
---

:root {
  --dimmed-text-color: rgb(170, 170, 170);
  --dimmed-border-color: rgb(233, 233, 233);
  --background-color: white;
  --body-text-color: black;
  --post-title-color: var(--body-text-color);
  --post-date-color: var(--body-text-color);
  --post-text-color: var(--body-text-color);
  --page-menu-link-color: var(--body-text-color);
  --header-author-name: var(--body-text-color);
  --header-listed-name: var(--dimmed-text-color);
  --more-from-border-color: var(--dimmed-border-color);
  --bio-color: var(--body-text-color);
  --wordcount-color: var(--dimmed-text-color);
  --website-color: var(--dimmed-text-color);
  --twitter-color: var(--dimmed-text-color);
  --link-color: #086dd6;
  --header-border-color: var(--dimmed-border-color);
}

A list of pre-defined CSS colors can be found here.

Note that you can also specify custom CSS here as well:

---
metatype: css
---

html, body {
  font-family: "Avenir Next", "Avenir Next Web" sans-serif;
}

.post-content {
  border: 1px solid red;
}