added styles to TextElement

src/bin/pathfinder/PFClient.hx

@@ -41,11 +41,11 @@ class PFClient implements Process {
         var childre: Array<UIElement> = [
             new TextElement('Acc: ${acc}'),
             new TextElement('Pos: X:${pos.x} Y:${pos.y} Z:${pos.z}'),
-            new TextElement('UPDATE', { onClick: () -> {
+            new TextElement('UPDATE', { style: {bgColor: Gray}, uiEvents: {onClick: () -> {
                 kernel.gps.GPS.instance.locate().handle((pos) ->{
                     this.requestRender();
                 });
-            }}),
+            }}}),
         ];
 
         this.root.setChildren(childre);