diff --git a/courses/223015b/slides/2025-12-19-termin-0-intro.md b/courses/223015b/slides/2025-12-19-termin-0-intro.md
index af2de57..d4906d7 100644
--- a/courses/223015b/slides/2025-12-19-termin-0-intro.md
+++ b/courses/223015b/slides/2025-12-19-termin-0-intro.md
@@ -11,7 +11,7 @@ title: Dateiformate, Schnittstellen, Speichermedien & Distributionswege
 <style>
 :root {
   --color-foreground: #1a1a2e;
-  --color-highlight: #5da9e9;
+  --color-highlight: #1e5f8a;
   --color-dimmed: #4a4a6a;
 }
 section.invert {
@@ -31,9 +31,9 @@ h2 {
 }
 pre {
   background: #0f0f23;
-  color: #5da9e9;
+  color: #1e5f8a;
   border-radius: 8px;
-  border-left: 3px solid #5da9e9;
+  border-left: 3px solid #1e5f8a;
 }
 pre code {
   background: transparent;
@@ -41,7 +41,7 @@ pre code {
 }
 code {
   background: #1a1a2e;
-  color: #5da9e9;
+  color: #1e5f8a;
   padding: 0.15em 0.4em;
   border-radius: 4px;
 }
diff --git a/courses/223015b/slides/2025-12-19-termin-1-grundlagen-text-audio.md b/courses/223015b/slides/2025-12-19-termin-1-grundlagen-text-audio.md
index f950518..a47cc50 100644
--- a/courses/223015b/slides/2025-12-19-termin-1-grundlagen-text-audio.md
+++ b/courses/223015b/slides/2025-12-19-termin-1-grundlagen-text-audio.md
@@ -11,7 +11,7 @@ title: Dateiformate, Schnittstellen, Speichermedien & Distributionswege
 <style>
 :root {
   --color-foreground: #1a1a2e;
-  --color-highlight: #5da9e9;
+  --color-highlight: #1e5f8a;
   --color-dimmed: #4a4a6a;
 }
 section.invert {
@@ -31,9 +31,9 @@ h2 {
 }
 pre {
   background: #0f0f23;
-  color: #5da9e9;
+  color: #1e5f8a;
   border-radius: 8px;
-  border-left: 3px solid #5da9e9;
+  border-left: 3px solid #1e5f8a;
 }
 pre code {
   background: transparent;
@@ -41,7 +41,7 @@ pre code {
 }
 code {
   background: #1a1a2e;
-  color: #5da9e9;
+  color: #1e5f8a;
   padding: 0.15em 0.4em;
   border-radius: 4px;
 }
diff --git a/courses/223015b/slides/2026-01-09-termin-2-bild-audio-video.md b/courses/223015b/slides/2026-01-09-termin-2-bild-audio-video.md
index b3a37ef..b567ef6 100644
--- a/courses/223015b/slides/2026-01-09-termin-2-bild-audio-video.md
+++ b/courses/223015b/slides/2026-01-09-termin-2-bild-audio-video.md
@@ -11,7 +11,7 @@ title: Dateiformate, Schnittstellen, Speichermedien & Distributionswege
 <style>
 :root {
   --color-foreground: #1a1a2e;
-  --color-highlight: #5da9e9;
+  --color-highlight: #1e5f8a;
   --color-dimmed: #4a4a6a;
 }
 section.invert {
@@ -31,9 +31,9 @@ h2 {
 }
 pre {
   background: #0f0f23;
-  color: #5da9e9;
+  color: #1e5f8a;
   border-radius: 8px;
-  border-left: 3px solid #5da9e9;
+  border-left: 3px solid #1e5f8a;
 }
 pre code {
   background: transparent;
@@ -41,7 +41,7 @@ pre code {
 }
 code {
   background: #1a1a2e;
-  color: #5da9e9;
+  color: #1e5f8a;
   padding: 0.15em 0.4em;
   border-radius: 4px;
 }
diff --git a/courses/223015b/slides/2026-01-23-termin-3-speichermedien-schnittstellen.md b/courses/223015b/slides/2026-01-23-termin-3-speichermedien-schnittstellen.md
index 598fb86..ba323ac 100644
--- a/courses/223015b/slides/2026-01-23-termin-3-speichermedien-schnittstellen.md
+++ b/courses/223015b/slides/2026-01-23-termin-3-speichermedien-schnittstellen.md
@@ -11,7 +11,7 @@ title: Dateiformate, Schnittstellen, Speichermedien & Distributionswege
 <style>
 :root {
   --color-foreground: #1a1a2e;
-  --color-highlight: #5da9e9;
+  --color-highlight: #1e5f8a;
   --color-dimmed: #4a4a6a;
 }
 section.invert {
@@ -31,9 +31,9 @@ h2 {
 }
 pre {
   background: #0f0f23;
-  color: #5da9e9;
+  color: #1e5f8a;
   border-radius: 8px;
-  border-left: 3px solid #5da9e9;
+  border-left: 3px solid #1e5f8a;
 }
 pre code {
   background: transparent;
@@ -41,7 +41,7 @@ pre code {
 }
 code {
   background: #1a1a2e;
-  color: #5da9e9;
+  color: #1e5f8a;
   padding: 0.15em 0.4em;
   border-radius: 4px;
 }
diff --git a/courses/223015b/slides/2026-01-30-termin-4-distribution-apis-zukunft.md b/courses/223015b/slides/2026-01-30-termin-4-distribution-apis-zukunft.md
index b22808d..7049681 100644
--- a/courses/223015b/slides/2026-01-30-termin-4-distribution-apis-zukunft.md
+++ b/courses/223015b/slides/2026-01-30-termin-4-distribution-apis-zukunft.md
@@ -11,7 +11,7 @@ title: Dateiformate, Schnittstellen, Speichermedien & Distributionswege
 <style>
 :root {
   --color-foreground: #1a1a2e;
-  --color-highlight: #5da9e9;
+  --color-highlight: #1e5f8a;
   --color-dimmed: #4a4a6a;
 }
 section.invert {
@@ -31,9 +31,9 @@ h2 {
 }
 pre {
   background: #0f0f23;
-  color: #5da9e9;
+  color: #1e5f8a;
   border-radius: 8px;
-  border-left: 3px solid #5da9e9;
+  border-left: 3px solid #1e5f8a;
 }
 pre code {
   background: transparent;
@@ -41,7 +41,7 @@ pre code {
 }
 code {
   background: #1a1a2e;
-  color: #5da9e9;
+  color: #1e5f8a;
   padding: 0.15em 0.4em;
   border-radius: 4px;
 }
diff --git a/courses/223015b/slides/2026-xx-xx-termin-5-vertiefung-offene-fragen.md b/courses/223015b/slides/2026-xx-xx-termin-5-vertiefung-offene-fragen.md
index ee01d2e..309c025 100644
--- a/courses/223015b/slides/2026-xx-xx-termin-5-vertiefung-offene-fragen.md
+++ b/courses/223015b/slides/2026-xx-xx-termin-5-vertiefung-offene-fragen.md
@@ -11,7 +11,7 @@ title: Dateiformate, Schnittstellen, Speichermedien & Distributionswege
 <style>
 :root {
   --color-foreground: #1a1a2e;
-  --color-highlight: #5da9e9;
+  --color-highlight: #1e5f8a;
   --color-dimmed: #4a4a6a;
 }
 section.invert {
@@ -31,9 +31,9 @@ h2 {
 }
 pre {
   background: #0f0f23;
-  color: #5da9e9;
+  color: #1e5f8a;
   border-radius: 8px;
-  border-left: 3px solid #5da9e9;
+  border-left: 3px solid #1e5f8a;
 }
 pre code {
   background: transparent;
@@ -41,7 +41,7 @@ pre code {
 }
 code {
   background: #1a1a2e;
-  color: #5da9e9;
+  color: #1e5f8a;
   padding: 0.15em 0.4em;
   border-radius: 4px;
 }
diff --git a/courses/223015c/slides/2025-12-20-termin-1-geschichte-grundlagen-html.md b/courses/223015c/slides/2025-12-20-termin-1-geschichte-grundlagen-html.md
index 7feb094..3b497e3 100644
--- a/courses/223015c/slides/2025-12-20-termin-1-geschichte-grundlagen-html.md
+++ b/courses/223015c/slides/2025-12-20-termin-1-geschichte-grundlagen-html.md
@@ -264,7 +264,6 @@ Wichtige Lektion für MedienethikerInnen
 # Lektionen für heute
 
 * Technologie ist nie neutral
-* Steigerung der Rechenleistung ist immer dann nötig, wenn die angehäuften Datenmengen nicht mehr von Menschenhand berechnet werden können
 
 
 <!--
diff --git a/scripts/generate-index.sh b/scripts/generate-index.sh
index 3ade7aa..b9053b9 100755
--- a/scripts/generate-index.sh
+++ b/scripts/generate-index.sh
@@ -11,7 +11,7 @@ case "$COURSE" in
     TITLE="Dateiformate, Schnittstellen, Speichermedien & Distributionswege"
     SUBTITLE="223015b · Modul \"Technik 1\" · 1. Semester"
     SLIDES_URL="https://librete.ch/hdm/223015b"
-    ACCENT_COLOR="#5da9e9"
+    ACCENT_COLOR="#1e5f8a"
     ACCENT_LIGHT="#e8f4fc"
     ;;
   223015c)