Deep Space (YouTube Dark Theme)

By: Sky

Deep Space theme for Firefox. Theme made using dark theme color from YouTube.

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Install

Features & Capabilities

Deep Space (YouTube Dark Theme) brings the popular YouTube dark mode aesthetics directly to your Firefox browser. Designed to reduce eye strain and provide a sleek browsing experience, this theme adapts YouTube's dark color palette to your entire browser window. Enjoy a consistent, modern, and stylish look every time you browse, especially in low-light environments.

With Deep Space, users get an immersive dark-themed interface that enhances visual comfort without compromising style. It's easy to install and seamlessly integrates with Firefox, making your browsing experience both pleasant and visually appealing.

User Growth & Download Statistics

Theme

By:

Sky

Daily users:

5,573 -9

Rating:

4.91

(103) 2 new ratings

Version:

1.0 Last updated: 2023-02-11

Version code:

5525011

Creation date:

2023-02-11

Risk:

Size:

26.28KB

Source:

Firefox Add-ons Store

Data ingested on:

2026-07-11

Compare stats and ranking:

Ranking

# 1,091 ▼ 7

Other rankings

#52 in Firefox

#18 in dark theme keyword 67

#44 in hd theme keyword 19 ▼ 1

#44 in space keyword 34 ▼ 1

#106 in theme keyword 66

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For Developers

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Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

Sky

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/deep-space-youtube-dark-theme/

User Reviews

Deep Space (YouTube Dark Theme) is highly praised for its beautiful purple color, subtle animated stars, and eye-friendly design that reduces eye strain. Users appreciate its perfect contrast and unobtrusive style. A minor drawback noted by multiple users is that the animated background on the sidebar looks stretched and blurred, which affects visual quality there. Overall, users love the theme and some are enthusiastic about supporting its creator.

Pros

The theme is visually appealing and beautiful, with users loving its purple color and cute animated stars.
It is eye-friendly, not tiring or dizzying to the eyes; has perfect contrast and is easy on the eyes.
The theme is subtle and unobtrusive, allowing users to focus without distraction.
It makes users excited and happy, some expressing strong affection and willingness to support the creator.

Cons

The animated background on the sidebar appears stretched and blurred, which some users find less appealing.

Recent reviews

by Fi*****, 2026-07-06

It's animated which is really cool and I didn't expect it

by mi*****, 2026-07-04

View all user reviews ›

Is Deep Space (YouTube Dark Theme) Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Deep Space (YouTube Dark Theme) does not require any sensitive permissions.

Risk impact analysis details

Low This permission has no access or impact on the user's system or data, thus carrying no risk.

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Deep Space (YouTube Dark Theme) has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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