Appearance

Boundless gives you two independent layers to play with: the accent color that runs through the interface, and an optional ambient effect drifting over the top. They combine freely, so you can end up with something quiet and plain or something busier. Both live under the More tab, in Appearance.

Accent themes #

There are nine accent themes:

• Boundless, the default
• Nova
• Mono
• Reverse
• Blossom
• Ember
• Mint
• Royal
• Void

The accent runs through buttons, highlights, selection states, and the small pieces of color that tell you what is interactive. Changing it changes the whole feel of the app without touching anything about how content is laid out.

Matching app icons #

Each of the nine accent themes has a matching alternate app icon, so the icon on your Home Screen can agree with the app you actually open. Pick the icon from the same screen where you choose the accent.

Ambient effects #

On top of everything else, you can add a particle field:

• None
• Snow
• Rain
• Stars
• Sakura
• Fireflies
• Hearts
• Embers
• Bubbles
• Confetti

These drift across the interface as a slow, low-key layer. They are decoration, and they are entirely optional: None is a perfectly good answer, and it is the right one if you want the interface to hold still.

Ambient effects animate continuously while they are on screen, so if you are watching battery life on a long reading session, turning the effect off is the simplest saving available in the app.

Putting a combination together #

A few starting points, none of them prescriptive:

• Quiet and neutral: Mono accent, no ambient effect. Nothing competes with the page.
• Matching icon: any accent you like, plus its matching app icon on your Home Screen.
• Seasonal: Blossom with Sakura, or a cooler accent with Snow, if you enjoy the app changing with the year.

You can change either layer at any time, and neither one affects your library, your progress, or how content is fetched.

What appearance settings do not touch #

Appearance is presentation only. It does not change:

• which sources you have installed, covered in Adding sources
• your library, history, or reading positions, covered in Your library
• reader gestures and auto-scroll, covered in Reading

Your appearance choices are stored in device settings. Signed out they stay on that device, so setting up a new one means picking your combination again.

For what is available on which platform, see Getting started, and for release notes on new themes and effects, the blog is the place to look.