Sale has ended but you can still get this app.
Download Now
M-Style Grey cm12.1/13

Official Description

M-Style Grey - theme for firmware CyanogenMod 12.1 / 13 in style new android Marshmallow in dark colors.

Themed apps:
- Calculator
- Dialer
- Gallery
- System ui
- Eleven
- Trebuchet
- Nova
- AudioFx
- Settings

Installation:
Install the apk-file. Themes (via point "Theme Packs" in app "Themes").
Reload this device.