fix: physical pixel border

lib/models/theme.dart

@@ -113,7 +113,7 @@ class ThemeModel with ChangeNotifier {
           tertiaryText: PrimerColors.gray500,
           background: PrimerColors.white,
           grayBackground: PrimerColors.gray100,
-          border: PrimerColors.gray100,
+          border: Colors.grey.shade400,
         );
       case Brightness.dark:
         return Palette(
@@ -123,7 +123,7 @@ class ThemeModel with ChangeNotifier {
           tertiaryText: PrimerColors.gray500,
           background: PrimerColors.black,
           grayBackground: PrimerColors.gray800,
-          border: PrimerColors.gray900,
+          border: Colors.grey.shade600,
         );
       default:
         return null;

lib/widgets/border_view.dart

@@ -7,7 +7,7 @@ class BorderView extends StatelessWidget {
   final double leftPadding;
 
   BorderView({
-    this.height = 1,
+    this.height,
     this.leftPadding = 0,
   });
 
@@ -15,6 +15,18 @@ class BorderView extends StatelessWidget {
   Widget build(BuildContext context) {
     final theme = Provider.of<ThemeModel>(context);
 
+    if (height == null) {
+      // Physical pixel
+      return Container(
+        margin: EdgeInsets.only(left: leftPadding),
+        decoration: BoxDecoration(
+          border: Border(
+            top: BorderSide(color: theme.palette.border, width: 0),
+          ),
+        ),
+      );
+    }
+
     return Row(
       children: <Widget>[
         SizedBox(
@@ -34,15 +46,5 @@ class BorderView extends StatelessWidget {
         ),
       ],
     );
-
-    // Physical pixel
-    // return Container(
-    //   margin: EdgeInsets.only(left: leftPadding),
-    //   decoration: BoxDecoration(
-    //     border: Border(
-    //       top: BorderSide(color: color, width: height),
-    //     ),
-    //   ),
-    // );
   }
 }