diff --git a/angebot/angebot-test-de.tex b/angebot/angebot-test-de.tex
deleted file mode 100644
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..0000000000000000000000000000000000000000
diff --git a/angebot/angebot-test-en.tex b/angebot/angebot-test-en.tex
deleted file mode 100644
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..0000000000000000000000000000000000000000
diff --git a/angebot/ptb-offer-de.lco b/angebot/ptb-offer-de.lco
deleted file mode 100644
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..0000000000000000000000000000000000000000
diff --git a/angebot/ptb-offer-en.lco b/angebot/ptb-offer-en.lco
deleted file mode 100644
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..0000000000000000000000000000000000000000
diff --git a/angebot/ptb-offer.cls b/angebot/ptb-offer.cls
deleted file mode 100644
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..0000000000000000000000000000000000000000
diff --git a/ptbletter/ptbletter.cls b/ptbletter/ptbletter.cls
index 446eefb2f70085cb5c37b8908f1f91ca58a98a61..9d1a1168bd65b03692841344ba37ae68af4c18e2 100644
--- a/ptbletter/ptbletter.cls
+++ b/ptbletter/ptbletter.cls
@@ -3,7 +3,7 @@
 \setcounter{errorcontextlines}{100}  \listfiles
 
 \NeedsTeXFormat{LaTeX2e}[1999/12/01]
-\ProvidesClass{ptbletter}[2018/11/09 v0.3d PTB-Brief-Klasse (RN)]
+\ProvidesClass{ptbletter}[2019/04/02 v0.3e PTB-Brief-Klasse (RN)]
 
 \let\ptb@tempdima=\@ovxx
 \let\ptb@tempdimb=\@ovyy
@@ -17,11 +17,10 @@
 \RequirePackage{graphicx,xcolor}
 
 \ifPTB@useCMYK
-  \definecolor{PTBcolor}{cmyk}{1,0.32549,0.12549,0.12549}
+  \definecolor{PTBcolor}{cmyk}{1,0.32549,0.12549,0.12549}% ???
 % icc:model: Europe ISO Coated FOGRA27
 \else
-%%%\definecolor{PTBcolor}{rgb}{0,0.67451,0.87451}
-  \definecolor{PTBcolor}{HTML}{00ACDF}
+  \definecolor{PTBcolor}{RGB}{0,155,206}
 \fi
 
 \newif\ifptb@BLN \ptb@BLNtrue