diff --git a/app/src/main/java/com/terratenientes/medicalhealth/DoctorDataBaseHelper.kt b/app/src/main/java/com/terratenientes/medicalhealth/DoctorDataBaseHelper.kt
index 4665e85..2a17563 100644
--- a/app/src/main/java/com/terratenientes/medicalhealth/DoctorDataBaseHelper.kt
+++ b/app/src/main/java/com/terratenientes/medicalhealth/DoctorDataBaseHelper.kt
@@ -86,9 +86,8 @@ class DoctorDataBaseHelper (context: Context) : SQLiteOpenHelper(context, DATABA
             put(COLUMN_EDAD, paciente.edad)
             put(COLUMN_SEXO, paciente.sexo)
         }
-        val whereClause = "$COLUMN_NOMBRE_PACIENTE = ? and $COLUMN_APELLIDO_PATERNO_PACIENTE = ? and $COLUMN_APELLIDO_MATERNO_PACIENTE = ?"
-        //val whereArgs = arrayOf(paciente.id.toString())
-        val whereArgs = arrayOf(paciente.nombre, paciente.apellidoPaterno, paciente.apellidoMaterno)
+        val whereClause = "$COLUMN_ID_PACIENTE = ?"
+        val whereArgs = arrayOf(paciente.id.toString())
         db.update(TABLE_PACIENTES, values, whereClause, whereArgs)
         db.close()
     }
diff --git a/app/src/main/res/drawable/radius_btn.xml b/app/src/main/res/drawable/radius_btn.xml
index dfaf77b..59b5312 100644
--- a/app/src/main/res/drawable/radius_btn.xml
+++ b/app/src/main/res/drawable/radius_btn.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <shape xmlns:android="http://schemas.android.com/apk/res/android">
-    <solid android:color="@color/tv_titulo"/>
-    <corners android:radius="30dp"/>
+    <solid android:color="@color/primaryColor"/>
+    <corners android:radius="0dp"/>
 </shape>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_agregar_paciente.xml b/app/src/main/res/layout/activity_agregar_paciente.xml
index d880bc1..94154ac 100644
--- a/app/src/main/res/layout/activity_agregar_paciente.xml
+++ b/app/src/main/res/layout/activity_agregar_paciente.xml
@@ -13,7 +13,7 @@
         android:layout_marginTop="5dp"
         android:textSize="32dp"
         android:textStyle="bold"
-        android:textColor="@color/tv_titulo"
+        android:textColor="@color/primaryColor"
         android:text="@string/tv_agregar_paciente_titulo"
         android:gravity="center"
         />
@@ -117,6 +117,9 @@
         android:layout_marginStart="50dp"
         android:layout_marginTop="25dp"
         android:layout_marginEnd="50dp"
+        android:textSize="18sp"
+        android:textStyle="bold"
+        android:background="@drawable/radius_btn"
         android:text="@string/bt_agregar" />
 
     <Button
@@ -126,6 +129,9 @@
         android:text="@string/bt_cancelar"
         android:layout_marginTop="2dp"
         android:layout_marginStart="50dp"
+        android:textSize="18sp"
+        android:textStyle="bold"
+        android:background="@drawable/radius_btn"
         android:layout_marginEnd="50dp"/>
 
 </LinearLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_consultar_pacientes.xml b/app/src/main/res/layout/activity_consultar_pacientes.xml
index 7fe0af7..263e0e5 100644
--- a/app/src/main/res/layout/activity_consultar_pacientes.xml
+++ b/app/src/main/res/layout/activity_consultar_pacientes.xml
@@ -13,7 +13,7 @@
         android:layout_marginTop="20dp"
         android:textSize="32dp"
         android:textStyle="bold"
-        android:textColor="@color/tv_titulo"
+        android:textColor="@color/primaryColor"
         android:text="@string/tv_titulo_consultar"
         android:gravity="center"
         />
diff --git a/app/src/main/res/layout/activity_eliminar_paciente.xml b/app/src/main/res/layout/activity_eliminar_paciente.xml
index af42305..1b0ccb3 100644
--- a/app/src/main/res/layout/activity_eliminar_paciente.xml
+++ b/app/src/main/res/layout/activity_eliminar_paciente.xml
@@ -13,7 +13,7 @@
         android:layout_marginTop="20dp"
         android:textSize="32dp"
         android:textStyle="bold"
-        android:textColor="@color/tv_titulo"
+        android:textColor="@color/primaryColor"
         android:text="@string/eliminar_paciente_titulo"
         android:gravity="center"
         />
@@ -34,6 +34,9 @@
         android:layout_marginStart="50dp"
         android:layout_marginTop="10dp"
         android:layout_marginEnd="50dp"
+        android:textSize="18sp"
+        android:textStyle="bold"
+        android:background="@drawable/radius_btn"
         android:text="@string/bt_eliminar" />
 
     <Button
@@ -42,6 +45,9 @@
         android:text="@string/bt_cancelar"
         android:layout_marginTop="5dp"
         android:layout_marginStart="50dp"
+        android:textSize="18sp"
+        android:textStyle="bold"
+        android:background="@drawable/radius_btn"
         android:layout_marginEnd="50dp"/>
 
 
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index c0fd13a..307f5a4 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -14,7 +14,7 @@
         android:layout_height="wrap_content"
         android:text="@string/activity_iniciar_sesion_titulo"
         android:textSize="40sp"
-        android:textColor="@color/tv_titulo"
+        android:textColor="@color/primaryColor"
         android:gravity="center_horizontal"
         />
 
@@ -27,7 +27,8 @@
         android:layout_gravity="center_horizontal"
         android:background="@drawable/radius_tv"
         android:hint="@string/et_usuario"
-        android:textColorHint="@color/tv_titulo"
+        android:textColor="#212121"
+        android:textColorHint="@color/primaryColor"
         android:textSize="25sp" />
 
 
@@ -39,7 +40,8 @@
         android:layout_height="wrap_content"
         android:layout_gravity="center_horizontal"
         android:hint="@string/et_contrasena"
-        android:textColorHint="@color/tv_titulo"
+        android:textColorHint="@color/primaryColor"
+        android:textColor="#212121"
         android:textSize="25sp"
         android:paddingStart="10dp"
         android:ems="10"
@@ -52,9 +54,11 @@
         android:layout_width="250dp"
         android:layout_height="wrap_content"
         android:text="@string/btn_iniciar_sesion"
+        android:textSize="18sp"
+        android:textStyle="bold"
         android:layout_gravity="center_horizontal"
         android:background="@drawable/radius_btn"
-        android:backgroundTint="@color/tv_titulo"
+        android:backgroundTint="@color/primaryColor"
         />
 
     <Button
@@ -63,9 +67,11 @@
         android:layout_width="250dp"
         android:layout_height="wrap_content"
         android:text="Prueba"
+        android:textSize="18sp"
+        android:textStyle="bold"
         android:layout_gravity="center_horizontal"
         android:background="@drawable/radius_btn"
-        android:backgroundTint="@color/tv_titulo"
+        android:backgroundTint="@color/primaryColor"
         />
 
     <Button
@@ -74,9 +80,11 @@
         android:layout_width="250dp"
         android:layout_height="wrap_content"
         android:text="Prueba2"
+        android:textSize="18sp"
+        android:textStyle="bold"
         android:layout_gravity="center_horizontal"
         android:background="@drawable/radius_btn"
-        android:backgroundTint="@color/tv_titulo"
+        android:backgroundTint="@color/primaryColor"
         />
 
     <TextView
diff --git a/app/src/main/res/layout/activity_modificar.xml b/app/src/main/res/layout/activity_modificar.xml
index 8a81843..b1dd6d6 100644
--- a/app/src/main/res/layout/activity_modificar.xml
+++ b/app/src/main/res/layout/activity_modificar.xml
@@ -13,7 +13,7 @@
         android:layout_marginTop="20dp"
         android:textSize="32dp"
         android:textStyle="bold"
-        android:textColor="@color/tv_titulo"
+        android:textColor="@color/primaryColor"
         android:text="@string/tv_modificar_titulo"
         android:gravity="center"
         />
@@ -97,8 +97,11 @@
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:text="@string/bt_modificar"
+        android:textSize="18sp"
+        android:textStyle="bold"
         android:layout_marginTop="70dp"
         android:layout_marginStart="50dp"
+        android:background="@drawable/radius_btn"
         android:layout_marginEnd="50dp"/>
 
 </LinearLayout>
\ No newline at end of file
diff --git a/app/src/main/res/values/colors.xml b/app/src/main/res/values/colors.xml
index 6e986c9..5629f02 100644
--- a/app/src/main/res/values/colors.xml
+++ b/app/src/main/res/values/colors.xml
@@ -2,5 +2,5 @@
 <resources>
     <color name="black">#FF000000</color>
     <color name="white">#FFFFFFFF</color>
-    <color name="tv_titulo">#FF303E9F</color>
+    <color name="primaryColor">#FF303E9F</color>
 </resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/themes.xml b/app/src/main/res/values/themes.xml
index 4dfea4a..ab56364 100644
--- a/app/src/main/res/values/themes.xml
+++ b/app/src/main/res/values/themes.xml
@@ -5,5 +5,7 @@
         <!-- <item name="colorPrimary">@color/my_light_primary</item> -->
     </style>
 
-    <style name="Theme.MedicalHealth" parent="Base.Theme.MedicalHealth" />
+    <style name="Theme.MedicalHealth" parent="Base.Theme.MedicalHealth" >
+        <item name="colorPrimary">@color/primaryColor</item>
+    </style>
 </resources>
\ No newline at end of file