New!! Swift Dark now includes a black CM theme alternative. You use an app called Arcus to install it and after install it'll work just like a normal CM12 or CM13 theme.
Swift Dark is a popular dark CM theme, for the CyanogenMod and COS theme engine. It supports a wide range of apps and is updated frequently. If you prefer a dark theme, with the beautiful material design intact, this CM13 theme is for you. Please read the FAQ below before install and always reboot after updating.
Themed Apps
• AOSP Browser
• AOSP Calendar
• AOSP Keyboard
• Boxer Email
• Calculator
• Chrome
• Chrome Beta
• Chrome Dev
• Contacts
• Cyanogen OS Dialer
• Dialer
• Documents/Downloads
• Dropbox
• Email (AOSP Email)
• ES File Explorer
• Facebook Messenger
• File Manager
• Gmail
• Google Allo
• Google Authenticator
• Google Calendar
• Google Dialer
• Google Drive
• Google Keyboard
• Google Maps
• Google Messenger
• Google Music
• Google Now
• Google Plus
• Google Translator
• GroupMe
• Hangouts
• Inbox
• Instagram
• JuiceSSH
• Keep
• Kik Messenger
• Kindle
• Mail.Ru Email App
• Microsoft Outlook
• MMS
• Music
• Nova Launcher
• Omni
• Pandora Radio
• Pushbullet
• Root Explorer
• Settings
• Skype
• Slack
• Snapchat
• SuperSU
• System UI
• Tumblr
• TVShow Time
• Viber
• WhatsApp
• YouTube
...and more
FAQ
Question: There are issues with my notifications after updating, the text is hard to read.
Answer: A reboot will fix this. Sometimes CM13 theme resources gets "stuck" when updating. Like the notification text color in this case. By rebooting you force the system to reload all resources. This is a CM theme engine bug.
Question: Play Store is not dark after updating.
Answer: This is due to Play Store having trouble picking up the dark CM theme resources after an update. A reboot will fix this.
Question: Can you include Telegram?
Answer: No. Telegram colors are all set in the java code, which means they are hardcoded and can't be changed.
Question: Will you add support for the CM14 theme engine?
Answer: Yes. I will add support for the CM14 theme engine as soon as it's released and implemented. There is obviously no time frame as of now.
Important notice about ROM support
This dark CM theme fully supports CyanogenMod and COS12.1 / COS13 ( Cyanogen OS ) which is natively installed on YU Yureka & Yutopia together with Zuk Z1 and OnePlus One. Custom ROMs with the CyanogenMod theme engine included, for exemple Dirty Unicorns, Paranoid Android ( PA ) and Resurrection Remix, are supported but there might be issues as I can't keep track of all commits everywhere.
Contact
If you want to chat about the app, if you find some missing resources, or if you want to share something else, join the G+ community at https://goo.gl/IC8FiK
Arcus community: https://plus.google.com/communities/105739351821425192942
Don't hesitate to contact me at per.lycke@gmail.com if you have feature requests or questions regarding this dark CM13 theme.