diff --git a/docs/DeveloperGuide.md b/docs/DeveloperGuide.md
index 9ec20c3e81..6188241385 100644
--- a/docs/DeveloperGuide.md
+++ b/docs/DeveloperGuide.md
@@ -355,7 +355,7 @@ Example: `budget view`
 
 * Should work on main OS (Windows, Linux, Mac) that has Java 11 installed.
 * This app is meant for a single user.
-* This app targeted towards users with an above-average typing speed.
+* This app is targeted towards users with an above-average typing speed.
 
 ## Glossary
 
diff --git a/docs/diagrams/ArchitectureDiagram.puml b/docs/diagrams/ArchitectureDiagram.puml
index 9d996c1c75..a40f4a0cd5 100644
--- a/docs/diagrams/ArchitectureDiagram.puml
+++ b/docs/diagrams/ArchitectureDiagram.puml
@@ -4,15 +4,15 @@
 
 package "" as f {
 Class Ui #blue
-Class Parser #Magenta
-Class Model #DeepPink
-Class Main #PowderBlue
-Class Storage #SpringGreen
+Class Parser #DarkMagenta
+Class Model #Crimson
+Class Main #LightSkyBlue
+Class Storage #Green
 Class Command #Grey
 }
 
-Class User #red
-Class "<$documents>" as File #Lime
+Class User #IndianRed
+Class "<$documents>" as File #DarkOliveGreen
 
 User -down-> Ui
 Ui --> Parser
diff --git a/docs/images/ArchitectureDiagram.png b/docs/images/ArchitectureDiagram.png
index 8871e46cd7..7ab8365d79 100644
Binary files a/docs/images/ArchitectureDiagram.png and b/docs/images/ArchitectureDiagram.png differ