minor fixess

qml/components/BackHeader.qml

@@ -12,14 +12,26 @@ RowLayout {
 
     Button {
         text: "\u2190 Назад"
+        implicitHeight: 44
         onClicked: header.back()
+        background: Rectangle {
+            implicitHeight: 44
+            radius: 4
+            color: parent.down ? "#3a3a54" : (parent.hovered ? "#353550" : "#2a2a40")
+        }
+        contentItem: Text {
+            text: parent.text
+            color: "#ffffff"
+            horizontalAlignment: Text.AlignHCenter
+            verticalAlignment: Text.AlignVCenter
+        }
     }
     Label {
         Layout.fillWidth: true
         text: header.title
         font.bold: true
         font.pixelSize: 16
-        color: settingsContainer.darkMode ? "white" : "black"
+        color: "#ffffff"
         horizontalAlignment: Text.AlignHCenter
         elide: Text.ElideRight
     }

qml/components/LabeledSlider.qml

@@ -16,7 +16,7 @@ RowLayout {
 
     Label {
         text: control.label
-        color: settingsContainer.darkMode ? "white" : "black"
+        color: "#ffffff"
         Layout.preferredWidth: 150
     }
     Slider {
@@ -30,7 +30,7 @@ RowLayout {
     }
     Label {
         text: Math.round(slider.value)
-        color: settingsContainer.darkMode ? "white" : "black"
+        color: "#ffffff"
         Layout.preferredWidth: 36
         horizontalAlignment: Text.AlignRight
     }

qml/components/SettingsButton.qml

@@ -0,0 +1,25 @@
+import QtQuick 2.12
+import QtQuick.Controls 2.12
+
+Button {
+    id: control
+    implicitHeight: 44
+
+    background: Rectangle {
+        implicitHeight: 44
+        implicitWidth: parent.width
+        radius: 4
+        color: control.down ? "#3a3a54"
+                           : (control.hovered ? "#353550" : "#2a2a40")
+    }
+
+    contentItem: Text {
+        text: control.text
+        font: control.font
+        opacity: enabled ? 1.0 : 0.5
+        color: "#ffffff"
+        horizontalAlignment: Text.AlignHCenter
+        verticalAlignment: Text.AlignVCenter
+        elide: Text.ElideRight
+    }
+}