Update mybutton widget to take in buttonColor & TextColour. Add Success message pop up message.

Update all buttons to include button color and text colors.

Frontend/patient_manager/lib/pages/home.dart

@@ -2,7 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:patient_manager/components/homeTileGrid.dart';
 import 'package:patient_manager/components/myAppBar.dart';
 import 'package:patient_manager/components/homeAppDrawer.dart';
-import 'package:patient_manager/components/myErrorMessage.dart';
+import 'package:patient_manager/components/mySuccessMessage.dart';
 import 'package:patient_manager/main.dart';
 
 class Home extends StatefulWidget {
@@ -54,8 +54,10 @@ class _HomeState extends State<Home> {
                 //     .pushNamed('/patient-manager/add', arguments: widget.userEmail);
                 showDialog(
                   context: context,
-                  builder: (context) => const MyErrorMessage(
-                    errorType: "Internet Connection",
+                  builder: (context) => const MySuccessMessage(
+                    successType: "Success",
+                    successMessage:
+                        "This is the message when something successful happened.",
                   ),
                 );
               },

Frontend/patient_manager/lib/pages/patientAdd.dart

@@ -284,6 +284,8 @@ class _AddPatientState extends State<AddPatient> {
                         }
                       },
                       buttonText: "Add",
+                      buttonColor: Colors.blueAccent,
+                      textColor: Colors.white,
                     ),
                   ),
                 ],

Frontend/patient_manager/lib/pages/patientEdit.dart

@@ -226,7 +226,11 @@ class _EditPatientState extends State<EditPatient> {
                       width: 300,
                       height: 100,
                       child: MyButton(
-                          onTap: deletePatientApiCall, buttonText: "Delete"))
+                        onTap: deletePatientApiCall,
+                        buttonText: "Delete",
+                        buttonColor: Colors.blueAccent,
+                        textColor: Colors.white,
+                      ))
                 ],
               ),
             ),
@@ -471,6 +475,8 @@ class _EditPatientState extends State<EditPatient> {
                         }
                       },
                       buttonText: "Update",
+                      buttonColor: Colors.blueAccent,
+                      textColor: Colors.white,
                     ),
                   ),
                 ],

Frontend/patient_manager/lib/pages/register.dart

@@ -156,8 +156,10 @@ class _RegisterState extends State<Register> {
                 SizedBox(
                   width: 500.0,
                   child: MyButton(
-                    onTap: signUserUp,
+                    onTap: () {},
                     buttonText: "Sign Up",
+                    buttonColor: Colors.blueAccent,
+                    textColor: Colors.white,
                   ),
                 ),
                 //spacer

Frontend/patient_manager/lib/pages/signin.dart

@@ -126,6 +126,8 @@ class _SignInState extends State<SignIn> {
                       }
                     },
                     buttonText: "Sign In",
+                    buttonColor: Colors.blueAccent,
+                    textColor: Colors.white,
                   ),
                 ),
                 //spacer