From 9adb594f2de675771ed643e6a9049ef1f681d9f0 Mon Sep 17 00:00:00 2001
From: Benjamin Weiss <benjamin.weiss@tu-ilmenau.de>
Date: Thu, 11 Jun 2015 10:53:20 +0200
Subject: [PATCH 1/2] added invertcolors option

---
 beamercolorthememetropolis.sty | 27 +++++++++++++++++++++++----
 beamerthemem.sty               |  7 +++++++
 2 files changed, 30 insertions(+), 4 deletions(-)

diff --git a/beamercolorthememetropolis.sty b/beamercolorthememetropolis.sty
index 31d3df8..54e44c0 100644
--- a/beamercolorthememetropolis.sty
+++ b/beamercolorthememetropolis.sty
@@ -19,6 +19,18 @@
     \@beamer@metropolis@blockbgtrue
 }
 
+% Options
+% =======
+
+% Option: invertcolors
+%         makes the background dark and the foreground light
+
+\newif\if@beamer@metropolis@invertcolors
+\@beamer@metropolis@invertcolorsfalse
+\DeclareOptionBeamer{invertcolors}{
+    \@beamer@metropolis@invertcolorstrue
+}
+
 % Option: ...
 
 \DeclareOptionBeamer*{%
@@ -57,10 +69,17 @@
 % in your preamble.
 %
 
-\setbeamercolor{normal text}{%
-  fg=mDarkTeal,
-  bg=black!2
-}
+\if@beamer@metropolis@invertcolors
+  \setbeamercolor{normal text}{%
+    fg=black!2,
+    bg=mDarkTeal
+  }
+\else
+  \setbeamercolor{normal text}{%
+    fg=mDarkTeal,
+    bg=black!2
+  }
+\fi
 
 \setbeamercolor{alerted text}{%
   fg=mLightBrown
diff --git a/beamerthemem.sty b/beamerthemem.sty
index 65cde91..c8e1341 100644
--- a/beamerthemem.sty
+++ b/beamerthemem.sty
@@ -81,6 +81,13 @@
   \PassOptionsToPackage{blockbg}{beamercolorthememetropolis}%
 }
 
+% Option: invertcolors
+%         makes the background dark and the foreground light
+
+\DeclareOptionBeamer{invertcolors}{
+  \PassOptionsToPackage{invertcolors}{beamercolorthememetropolis}%
+}
+
 % Option: ...
 
 \DeclareOptionBeamer*{

From dd483ff5fcd89713f174071509475dc579816f3a Mon Sep 17 00:00:00 2001
From: Benjamin Weiss <benjamin.weiss@tu-ilmenau.de>
Date: Thu, 11 Jun 2015 22:25:27 +0200
Subject: [PATCH 2/2] renamed invertcolors to dark colors and added info in
 README.md

---
 README.md                      |  1 +
 beamercolorthememetropolis.sty | 12 ++++++------
 beamerthemem.sty               |  6 +++---
 3 files changed, 10 insertions(+), 9 deletions(-)

diff --git a/README.md b/README.md
index bab2665..955f1fe 100644
--- a/README.md
+++ b/README.md
@@ -66,6 +66,7 @@ the slides, i.e.
   in following format: #current/#total. By default, just current page number is
   printed.
 * Option `noslidenumbers` omits slide numbers entirely.
+* Option `darkcolors` makes the background dark and the foreground light.
 
 #### Color customization
 
diff --git a/beamercolorthememetropolis.sty b/beamercolorthememetropolis.sty
index 54e44c0..a890b34 100644
--- a/beamercolorthememetropolis.sty
+++ b/beamercolorthememetropolis.sty
@@ -22,13 +22,13 @@
 % Options
 % =======
 
-% Option: invertcolors
+% Option: darkcolors
 %         makes the background dark and the foreground light
 
-\newif\if@beamer@metropolis@invertcolors
-\@beamer@metropolis@invertcolorsfalse
-\DeclareOptionBeamer{invertcolors}{
-    \@beamer@metropolis@invertcolorstrue
+\newif\if@beamer@metropolis@darkcolors
+\@beamer@metropolis@darkcolorsfalse
+\DeclareOptionBeamer{darkcolors}{
+    \@beamer@metropolis@darkcolorstrue
 }
 
 % Option: ...
@@ -69,7 +69,7 @@
 % in your preamble.
 %
 
-\if@beamer@metropolis@invertcolors
+\if@beamer@metropolis@darkcolors
   \setbeamercolor{normal text}{%
     fg=black!2,
     bg=mDarkTeal
diff --git a/beamerthemem.sty b/beamerthemem.sty
index c8e1341..693eecf 100644
--- a/beamerthemem.sty
+++ b/beamerthemem.sty
@@ -81,11 +81,11 @@
   \PassOptionsToPackage{blockbg}{beamercolorthememetropolis}%
 }
 
-% Option: invertcolors
+% Option: darkcolors
 %         makes the background dark and the foreground light
 
-\DeclareOptionBeamer{invertcolors}{
-  \PassOptionsToPackage{invertcolors}{beamercolorthememetropolis}%
+\DeclareOptionBeamer{darkcolors}{
+  \PassOptionsToPackage{darkcolors}{beamercolorthememetropolis}%
 }
 
 % Option: ...