diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index e0ec4e81..c9adac5e 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -28,6 +28,7 @@
 
 ABAP:
   type: programming
+  color: "#E8274B"
   extensions:
   - .abap
   ace_mode: abap
@@ -337,6 +338,7 @@ Boo:
 
 Brainfuck:
   type: programming
+  color: "#2F2530"
   extensions:
   - .b
   - .bf
@@ -643,6 +645,7 @@ Creole:
 
 Crystal:
   type: programming
+  color: "#76EEF5"
   extensions:
   - .cr
   ace_mode: ruby
@@ -1564,6 +1567,7 @@ Kit:
 
 Kotlin:
   type: programming
+  color: "#EA4DFA"
   extensions:
   - .kt
   - .ktm
@@ -1781,6 +1785,7 @@ MUF:
 
 Makefile:
   type: programming
+  color: "#427819"
   aliases:
   - bsdmake
   - make