* turn speed (text) to yellow when braking.

selfdrive/ui/paint.cc

@@ -671,7 +671,7 @@ static void ui_draw_vision_speed(UIState *s) {
 
     nvgFontFace(s->vg, "sans-regular");
     nvgFontSize(s->vg, 36*2.5);
-    nvgFillColor(s->vg, nvgRGBA(255, 255, 255, 200));
+    nvgFillColor(s->vg, s->scene.brakeLights? COLOR_YELLOW : nvgRGBA(255, 255, 255, 200));
 
     if (s->is_metric) {
       nvgText(s->vg, viz_speed_x+viz_speed_w/2, 320, "kph", NULL);

selfdrive/ui/ui.cc

@@ -548,6 +548,7 @@ void handle_message(UIState *s, Message * msg) {
     }
     s->scene.leftBlinker = datad.leftBlinker;
     s->scene.rightBlinker = datad.rightBlinker;
+    s->scene.brakeLights = datad.brakeLights;
   }
   capn_free(&ctx);
 }

selfdrive/ui/ui.hpp

@@ -166,6 +166,7 @@ typedef struct UIScene {
   // for blinker, from kegman
   bool leftBlinker;
   bool rightBlinker;
+  bool brakeLights;
   int blinker_blinkingrate;
 } UIScene;