From ee3028367e35946bd19a8bfd253e57aeb1c94d3c Mon Sep 17 00:00:00 2001
From: Martin Mares <mj@ucw.cz>
Date: Tue, 5 Jun 2018 22:10:15 +0200
Subject: [PATCH] Added macros for primitive operations with pdfTeX color stack

---
 ucwmac.tex | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/ucwmac.tex b/ucwmac.tex
index bbee36d..a0b0fe1 100644
--- a/ucwmac.tex
+++ b/ucwmac.tex
@@ -295,6 +295,14 @@
 \let\plaintilde=~
 \protected\def~{\plaintilde}
 
+%%% Colors %%%
+
+\chardef\colorstk=\pdfcolorstackinit page direct{0 g 0 G}
+\def\colorpush#1{\pdfcolorstack\colorstk push{#1 rg #1 RG}}
+\def\colorpushgray#1{\pdfcolorstack\colorstk push{#1 g #1 G}}
+\def\colorpushcmyk#1{\pdfcolorstack\colorstk push{#1 k #1 K}}
+\def\colorpop{\pdfcolorstack\colorstk pop}
+
 %%% Localization %%%
 
 % Current language
-- 
2.39.2