Make the purple light turn on when we accept images

Drop some of the other colors to make it clearer

Change-Id: I498333523de222888b29d106f276d2f1570e35e6
Signed-off-by: Austin Schuh <austin.linux@gmail.com>
diff --git a/y2022/localizer/localizer.h b/y2022/localizer/localizer.h
index 5620a4d..fc15e9f 100644
--- a/y2022/localizer/localizer.h
+++ b/y2022/localizer/localizer.h
@@ -150,6 +150,8 @@
 
   std::array<LedOutput, kNumPis> led_outputs() const { return led_outputs_; }
 
+  int total_accepted() const { return statistics_.total_accepted; }
+
  private:
   struct CombinedState {
     AccelState accel_state = AccelState::Zero();