diff --git a/types.go b/types.go
index 6fdbf84..212fc73 100644
--- a/types.go
+++ b/types.go
@@ -116,6 +116,11 @@ type Pomodoro struct {
 	End   time.Time `json:"end"`
 }
 
+// Duration returns the runtime of the pomodoro
+func (p Pomodoro) Duration() time.Duration {
+	return (p.End.Sub(p.Start))
+}
+
 // Notifier implements a system specific
 // notification. On Linux this libnotify.
 // TODO: OSX, Windows(?)
diff --git a/util.go b/util.go
index 6ff64eb..99d3f53 100644
--- a/util.go
+++ b/util.go
@@ -31,28 +31,44 @@ func prompt(text string) {
 func summerizeTasks(config *Config, tasks []*Task) {
 	for _, task := range tasks {
 		fmt.Printf("%d: [%s] ", task.ID, task.Duration.Truncate(time.Second))
-		// a list of green/red pomodoros
-		// green[x x] red[x x]
+		// a list of green/yellow/red pomodoros
+		// green indicates the pomodoro was finished normally
+		// yellow indicates the break was exceeded by +5minutes
+		// red indicates the pomodoro was never completed
 		fmt.Printf("[")
-		for i := 0; i < task.NPomodoros; i++ {
+		for i, pomodoro := range task.Pomodoros {
 			if i > 0 {
 				fmt.Printf(" ")
 			}
-			if len(task.Pomodoros) >= i {
-				color.New(color.FgGreen).Printf("X")
+			// pomodoro exceeded it's expected duration by more than 5m
+			if pomodoro.Duration() > task.Duration+5*time.Minute {
+				color.New(color.FgYellow).Printf("X")
 			} else {
-				color.New(color.FgRed).Printf("X")
+				// pomodoro completed normally
+				color.New(color.FgGreen).Printf("X")
 			}
 		}
+		// each missed pomodoro
+		for i := 0; i < task.NPomodoros-len(task.Pomodoros); i++ {
+			if i > 0 || i == 0 && len(task.Pomodoros) > 0 {
+				fmt.Printf(" ")
+			}
+			color.New(color.FgRed).Printf("X")
+		}
 		fmt.Printf("]")
+		// Tags
 		if len(task.Tags) > 0 {
 			fmt.Printf(" [")
 			for i, tag := range task.Tags {
+				if i > 1 && i != len(task.Tags) {
+					fmt.Printf(" ")
+				}
+				// user specified color mapping exists
 				if color, ok := config.Colors[tag]; ok {
-					if i > 0 {
-						fmt.Printf(" ")
-					}
 					color.Printf("%s", tag)
+				} else {
+					// no color mapping
+					fmt.Printf("%s", tag)
 				}
 			}
 			fmt.Printf("]")