Holo Themer

Holo Themer lets you force any app to use:

Holo Dark
Holo Light
Holo Light with dark Actionbar
Holo Dark with no Actionbar
Holo Light with no Actionbar
Wallpaper
Wallpaper with no Titlebar
Pure black
Pure black - no actionbar
Device Default
Device Default - Light
Material themes are included for Lollipop ROM's only

This will only work on apps that already use a Holo theme of some kind (which is most apps, and practically no games)
Even then, some apps will mess up a bit

The new Add-on store lets you download additional xposed mods which work with this one
EG: the Settings_light addon makes the icons down the left of the settings app black, to use with Holo Light
Visit XDA thread for more details

Credits to @NeverUseful for the icon!

Screenshots

Settings in Light

Settings in Light with Dark actionbar

Messaging in Dark

For more screenshots see the support thread

Author(s): 
hamzahrmalik
Support/Discussion URL: 
http://forum.xda-developers.com/xposed/modules/mod-holo-themer-force-holo-dark-light-t2768706
Package: 
com.hamzah.holothemer
Version name: 
3.2
Release type: 
Stable (low risk of bugs)
Download: 
com.hamzah.holothemer_v22_1cb6f8.apk (1.98 MB)
Number of downloads: 
80,015 in total · 9 in the last 24 hours
MD5 checksum: 
1cb6f83e4dd8d9b554fb232152ec4bdc
Uploaded on: 
Tuesday, April 12, 2016 - 23:15
Changes: 

Dark theme option for the Holo Themer app itself

Version name: 
3.1
Release type: 
Stable (low risk of bugs)
Download: 
com.hamzah.holothemer_v21_12c225.apk (1.75 MB)
Number of downloads: 
20,505 in total · 3 in the last 24 hours
MD5 checksum: 
12c225a3a79f42c823bc58561c5f4059
Uploaded on: 
Friday, February 5, 2016 - 23:16
Changes: 

Compatibility with new premium version. You can skip this if you don't use premium

Version name: 
3.0.2
Release type: 
Stable (low risk of bugs)
Download: 
com.hamzah.holothemer_v20_0fd195.apk (1.75 MB)
Number of downloads: 
29,459 in total · 0 in the last 24 hours
MD5 checksum: 
0fd195a70c728dc5f27a49e293e310e8
Uploaded on: 
Saturday, October 31, 2015 - 17:43
Version name: 
3.0.2
Release type: 
Stable (low risk of bugs)
Download: 
com.hamzah.holothemer_v19_58e449.apk (1.72 MB)
Number of downloads: 
3,674 in total · 0 in the last 24 hours
MD5 checksum: 
58e449aed6b4a75207bbd3c878a72ca1
Uploaded on: 
Sunday, October 25, 2015 - 15:52
Changes: 

Removed logging

Version name: 
3.0
Release type: 
Stable (low risk of bugs)
Download: 
com.hamzah.holothemer_v16_db87e0.apk (1.72 MB)
Number of downloads: 
98,924 in total · 0 in the last 24 hours
MD5 checksum: 
db87e0eb08c4778263f649fad5dddf79
Uploaded on: 
Friday, February 13, 2015 - 23:04
Changes: 

Added Material themes for Lollipop users ONLY

Version name: 
2.8.3
Release type: 
Stable (low risk of bugs)
Download: 
com.hamzah.holothemer_v16_6ce0b4.apk (1.72 MB)
Number of downloads: 
10,613 in total · 0 in the last 24 hours
MD5 checksum: 
6ce0b4d86a2d7ddf47280080be69c139
Uploaded on: 
Friday, February 6, 2015 - 18:41
Changes: 

Fix startup crash

Version name: 
2.8.2
Release type: 
Stable (low risk of bugs)
Download: 
com.hamzah.holothemer_v15_ddf625.apk (1.72 MB)
Number of downloads: 
4,840 in total · 0 in the last 24 hours
MD5 checksum: 
ddf6254abaa5574248ae241e74a1a436
Uploaded on: 
Monday, February 2, 2015 - 20:35
Changes: 

Bug fixes
Added loading dialog

Version name: 
2.8.1
Release type: 
Stable (low risk of bugs)
Download: 
com.hamzah.holothemer_v14_1fc169.apk (1.72 MB)
Number of downloads: 
2,135 in total · 0 in the last 24 hours
MD5 checksum: 
1fc16971d4a5012d032477f02be302cf
Uploaded on: 
Sunday, February 1, 2015 - 22:04
Changes: 

Fixed search

Version name: 
2.8
Release type: 
Stable (low risk of bugs)
Download: 
com.hamzah.holothemer_v13_a794a5.apk (1.57 MB)
Number of downloads: 
24,539 in total · 0 in the last 24 hours
MD5 checksum: 
a794a5c797acaf9003da38ec0fd3b8e0
Uploaded on: 
Sunday, December 14, 2014 - 20:51
Changes: 

Internal improvements

Version name: 
2.7.1
Release type: 
Stable (low risk of bugs)
Download: 
com.hamzah.holothemer_v12_ecce2f.apk (1.57 MB)
Number of downloads: 
6,018 in total · 0 in the last 24 hours
MD5 checksum: 
ecce2fad89b6dde941f01e00e0de13f0
Uploaded on: 
Sunday, December 7, 2014 - 17:23
Changes: 

Bug Fixes

Version name: 
2.7
Release type: 
Stable (low risk of bugs)
Download: 
com.hamzah.holothemer_v11_1ed5b7.apk (1.57 MB)
Number of downloads: 
11,238 in total · 0 in the last 24 hours
MD5 checksum: 
1ed5b729b895f584b232900353d443b5
Uploaded on: 
Saturday, November 22, 2014 - 18:45
Changes: 

Added semi-opaque wallpaper theme
Themed the app Material style
Added app icons in the list of apps

Version name: 
2.6.2
Release type: 
Stable (low risk of bugs)
Download: 
com.hamzah.holothemer_v10_4980d0.apk (970.48 KB)
Number of downloads: 
42,646 in total · 3 in the last 24 hours
MD5 checksum: 
4980d0f94d03496058955ad63eed789b
Uploaded on: 
Friday, August 8, 2014 - 16:41
Changes: 

IMPORTANT bug fixes
Also check out the addons menu, there are new ones

Version name: 
2.6
Release type: 
Stable (low risk of bugs)
Download: 
com.hamzah.holothemer_v8_214fa9.apk (970.46 KB)
Number of downloads: 
3,960 in total · 0 in the last 24 hours
MD5 checksum: 
214fa96f40a3a4f51e8263a11383df3e
Uploaded on: 
Tuesday, August 5, 2014 - 15:56
Changes: 

Added Refresh button in the app
New backup format, now backs up ALL preferences
Unfortunately, backups made in earlier version cannot be restored in this version

Also premium version in now out on Play Store, please consider upgrading
https://play.google.com/store/apps/details?id=com.hamzah.holothemer.premium

Version name: 
2.5
Release type: 
Stable (low risk of bugs)
Download: 
com.hamzah.holothemer_v7_e31329.apk (965.88 KB)
Number of downloads: 
19,247 in total · 0 in the last 24 hours
MD5 checksum: 
e313291fb0b05f3a9196a506f640b146
Uploaded on: 
Saturday, June 21, 2014 - 15:43
Changes: 

Option to hide app icon from Actionbar
"User Wallpaper" theme now has an Actionbar so apps won't crash as much

Version name: 
2.4
Release type: 
Stable (low risk of bugs)
Download: 
com.hamzah.holothemer_v6_70e591.apk (965.55 KB)
Number of downloads: 
9,285 in total · 0 in the last 24 hours
MD5 checksum: 
70e591174c517d743ca0cc63ab7abc79
Uploaded on: 
Saturday, June 7, 2014 - 15:52
Changes: 

New Add-ons list
Now has a list of installed addons which can be launched from the list

Fixed a typo

Launch app by long pressing in list

Version name: 
2.3
Release type: 
Stable (low risk of bugs)
Download: 
com.hamzah.holothemer_v5_a338f8.apk (960.87 KB)
Number of downloads: 
5,726 in total · 0 in the last 24 hours
MD5 checksum: 
a338f8953e73b0906047623dd5c2efc5
Uploaded on: 
Tuesday, June 3, 2014 - 22:24
Changes: 

Backup and restore of settings

Version name: 
2.2
Release type: 
Stable (low risk of bugs)
Download: 
com.hamzah.holothemer_v4_a4df29.apk (960.82 KB)
Number of downloads: 
2,475 in total · 0 in the last 24 hours
MD5 checksum: 
a4df2956bffbc75a49686f6df9139e4a
Uploaded on: 
Monday, June 2, 2014 - 22:12
Changes: 

Search
Fastscroll

Version name: 
2.1
Release type: 
Stable (low risk of bugs)
Download: 
com.hamzah.holothemer_v3_32c5f6.apk (957.1 KB)
Number of downloads: 
2,169 in total · 0 in the last 24 hours
MD5 checksum: 
32c5f6312745cf0942b6d51cc4ca6b08
Uploaded on: 
Sunday, June 1, 2014 - 22:12
Changes: 

Added these themes

Pure black
Pure black - no actionbar
Device Default
Device Default - Light

Version name: 
2.0
Release type: 
Stable (low risk of bugs)
Download: 
com.hamzah.holothemer_v2_206ad4.apk (956.91 KB)
Number of downloads: 
1,681 in total · 0 in the last 24 hours
MD5 checksum: 
206ad44b38f02ffadf0e0442dd1625f0
Uploaded on: 
Sunday, June 1, 2014 - 17:37
Changes: 

Added no actionbar themes
Added User Wallpaper themes
Added Add-on store

Version name: 
1.0
Release type: 
Stable (low risk of bugs)
Download: 
com.hamzah.holothemer_v1_568d1b.apk (266.23 KB)
Number of downloads: 
2,310 in total · 0 in the last 24 hours
MD5 checksum: 
568d1be1031f17ab506e93fe3e5dc1fb
Uploaded on: 
Saturday, May 31, 2014 - 21:23
Changes: 

Initial