Fixate QR background and foreground colors in all themes

lib/src/screens/exchange_trade/exchange_trade_page.dart

@@ -165,14 +165,7 @@ class ExchangeTradeState extends State<ExchangeTradeForm> {
                                               .color!
                                       )
                                   ),
-                                  child: QrImage(
-                                    data: trade.inputAddress ?? fetchingLabel,
-                                    backgroundColor: Colors.transparent,
-                                    foregroundColor: Theme.of(context)
-                                        .accentTextTheme!
-                                        .subtitle2!
-                                        .color!,
-                                  ),
+                                  child: QrImage(data: trade.inputAddress ?? fetchingLabel),
                                 )))),
                     Spacer(flex: 3)
                   ]),

lib/src/screens/receive/fullscreen_qr_page.dart

@@ -1,7 +1,6 @@
 import 'package:cake_wallet/src/screens/receive/widgets/qr_image.dart';
 import 'package:cake_wallet/themes/theme_base.dart';
 import 'package:flutter/material.dart';
-import 'package:flutter/cupertino.dart';
 import 'package:cake_wallet/src/screens/base_page.dart';
 
 class FullscreenQRPage extends BasePage {
@@ -69,14 +68,10 @@ class FullscreenQRPage extends BasePage {
           child: AspectRatio(
             aspectRatio: 1.0,
             child: Container(
-              padding: EdgeInsets.all(5),
+              padding: EdgeInsets.all(10),
               decoration: BoxDecoration(
                   border: Border.all(width: 3, color: Theme.of(context).accentTextTheme!.headline2!.backgroundColor!)),
-              child: QrImage(
-                data: qrData,
-                backgroundColor: isLight ? Colors.transparent : Colors.black,
-                foregroundColor: Theme.of(context).accentTextTheme!.headline2!.backgroundColor!,
-              ),
+              child: QrImage(data: qrData),
             ),
           ),
         ),

lib/src/screens/receive/widgets/qr_image.dart

@@ -5,18 +5,14 @@ class QrImage extends StatelessWidget {
   QrImage({
     required this.data,
     this.size = 100.0,
-    this.backgroundColor,
-    this.foregroundColor = Colors.black,
     this.version = 9, // Previous value: 7 something happened after flutter upgrade monero wallets addresses are longer than ver. 7 ???
     this.errorCorrectionLevel = qr.QrErrorCorrectLevel.L,
   });
 
-  final Color? backgroundColor;
   final double size;
   final String data;
   final int version;
   final int errorCorrectionLevel;
-  final Color foregroundColor;
 
   @override
   Widget build(BuildContext context) {
@@ -25,7 +21,8 @@ class QrImage extends StatelessWidget {
       errorCorrectionLevel: errorCorrectionLevel,
       version: version,
       size: size,
-      foregroundColor: foregroundColor,
+      foregroundColor: Colors.black,
+      backgroundColor: Colors.white,
       padding: EdgeInsets.zero,
     );
   }

lib/src/screens/receive/widgets/qr_widget.dart

@@ -89,11 +89,7 @@ class QRWidget extends StatelessWidget {
                                   color: Theme.of(context).accentTextTheme!.headline2!.backgroundColor!,
                                 ),
                               ),
-                              child: QrImage(
-                                data: addressListViewModel.uri.toString(),
-                                backgroundColor: isLight ? Colors.transparent : Colors.black,
-                                foregroundColor: Theme.of(context).accentTextTheme!.headline2!.backgroundColor!,
-                              ),
+                              child: QrImage(data: addressListViewModel.uri.toString()),
                             ),
                           ),
                         ),