Parameter · Value
Designer · —
Size · 18.2 MB
Format · MTZ
Compatibility · HyperOS / MIUI
Midnight Minimalism: Core Visual Language
AJ Dark embraces a pure black canvas that drains every UI element of unnecessary fluff. System bars, notification shade, and settings panels adopt a uniform charcoal tone, creating a visual tunnel that guides the eye toward content. Typography stays untouched, letting the font’s native weight shine against the darkness. Subtle gradients appear only in the lock‑screen wallpaper, providing depth without breaking the monochrome promise. The result feels like a night‑mode OS that never compromises readability.
Suggested Read: UI 8.1 HyperOS vs iOS‑Style MIUI Theme: Which Fits Your Phone?
Rounded Icons That Feel Organic
The accompanying round‑icon pack replaces the default sharp edges with soft, pill‑shaped silhouettes. Each icon retains its original glyph, but the rounded mask adds a tactile quality reminiscent of physical buttons. Shadows are deliberately muted, so icons sit flush with the background, reinforcing the theme’s low‑contrast ethos. The icon set covers core apps, system shortcuts, and popular third‑party launchers, ensuring a cohesive look across the entire UI.
Who’ll Love AJ Dark? Ideal Users
• Minimalist enthusiasts – anyone who prefers a distraction‑free interface will appreciate the stripped‑back palette.
• Night‑owl users – the deep black reduces eye strain in low‑light environments.
• Xiaomi/Redmi power users – the theme respects HyperOS’s native layout, avoiding layout glitches.
• Design‑curious fans – the rounded icon aesthetic offers a fresh take on the stock MIUI look without veering into gimmick territory.
Installation Walkthrough & Gotchas
1. Download the MTZ file from the official theme store or the provided link.
2. Open the Themes app, tap the “Import” button, and locate the MTZ file.
3. Apply the theme; the system will prompt a brief UI refresh.
4. Optional: Install the matching wallpaper (8.2 MB) for a fully immersive experience.
5. Restart the device if any UI elements appear overlapped – a single reboot resolves the rare rendering glitch.
Compatibility notes – The theme is built for HyperOS 3.x and MIUI 14‑based builds. It also works on custom ROMs that retain the original Theme Store framework (e.g., Xiaomi.eu). Users on older MIUI versions may encounter missing icons or misaligned widgets.
Pros and Cons
• Pros
• Consistent deep‑black UI reduces battery usage on AMOLED panels.
• Rounded icons add a modern, friendly feel.
• Lightweight package (18.2 MB) loads quickly.
• Seamless integration with HyperOS control center.
• Cons
• No built‑in light‑mode variant.
• Rounded icons may clash with apps that use custom shapes.
• Requires a restart for flawless rendering on some devices.
Overall, AJ Dark delivers a polished, night‑mode‑first experience that feels native to HyperOS while offering a distinctive icon treatment. Its modest size and straightforward installation make it a low‑commitment upgrade for anyone looking to darken their Xiaomi or Redmi device without sacrificing usability.
Theme Preview
Download Links
Use the buttons below to open the theme file and the supporting link.
Download AJ Dark MTZ File
Download Wallpaper
Helpful links
More Theme Updates
For more curated HyperOS and MIUI theme updates, visit Hyper OS x MIUI .
