diff --git a/toolchain_GNUARM.cmake b/toolchain_GNUARM.cmake
index 689f959..3ecb795 100644
--- a/toolchain_GNUARM.cmake
+++ b/toolchain_GNUARM.cmake
@@ -134,6 +134,14 @@
     message(FATAL_ERROR "BRANCH_PROTECTION NOT supported for GNU-ARM")
 endif()
 
+# Workaround to add diagnostics color while using Ninja generator.
+# For reference: https://github.com/ninja-build/ninja/issues/174
+if (CMAKE_GENERATOR STREQUAL "Ninja")
+    add_compile_options(
+        -fdiagnostics-color=always
+    )
+endif()
+
 add_link_options(
     --entry=Reset_Handler
     -specs=nano.specs