Cmake specify color output as always

GCryptLib/CMakeLists.txt

@@ -15,7 +15,10 @@ target_include_directories(${PROJECT_NAME} PRIVATE
   include
 )
 
-target_compile_options(${PROJECT_NAME} PRIVATE -Werror)
+target_compile_options(${PROJECT_NAME} PRIVATE
+  -Werror
+  -fdiagnostics-color=always
+)
 
 #########
 # Tests #