Service#summary cleaned a bit.

Not provided tokens will also be printed in red.

src/main.cr

@@ -1,5 +1,6 @@
 require "option_parser"
 require "yaml"
+require "colorize"
 
 # Those are set to local to make testing easier.
 PID_DIRECTORY = "./pid"
@@ -302,17 +303,31 @@ class Service
 	def summary
 		"Name: #{name}\n" +
 			"Environment: #{environment.name} (#{environment.type.to_s.downcase})\n" +
-			"Provides:\n" +
+			(
-			(provides.map { |x| "  - " + x.token + "\n" }).join +
+				if provides.size > 0
-			"Consumes:\n" +
+					"Provides:\n" +
-			(@reference.consumes.map { |x|
+					(provides.map { |x| "  - " + x.token + "\n" }).join
-				provider = @providers[x.token]?
-				if provider
-					"  - #{x.token} (from #{provider.to_s})\n" 
 				else
-					"  - #{x.token} (NOT CURRENTLY PROVIDED)\n"
+					""
 				end
-			}).join
+			) +
+			(
+				if @reference.consumes.size > 0
+					"Consumes:\n" +
+					(@reference.consumes.map { |x|
+						provider = @providers[x.token]?
+						if provider
+							"  - #{x.token} (from #{provider.id})\n"
+						else
+							"  - #{x.token} " +
+								"(NOT CURRENTLY PROVIDED)".colorize(:red).to_s +
+								"\n"
+						end
+					}).join
+				else
+					""
+				end
+			)
 	end
 
 	class_getter all = [] of Service