hyprlandxkbindicator: don't reference the button out of nowhere

.config/quickshell/ii/modules/bar/BarContent.qml

@@ -293,6 +293,7 @@ Item { // Bar content region
                     HyprlandXkbIndicator {
                         Layout.alignment: Qt.AlignVCenter
                         Layout.rightMargin: indicatorsRowLayout.realSpacing
+                        color: rightSidebarButton.colText
                     }
                     MaterialSymbol {
                         Layout.rightMargin: indicatorsRowLayout.realSpacing

.config/quickshell/ii/modules/bar/HyprlandXkbIndicator.qml

@@ -6,6 +6,7 @@ import qs.modules.common.widgets
 Loader {
     id: root
     property bool vertical: false
+    property color color: Appearance.colors.colOnSurfaceVariant
     active: HyprlandXkb.layoutCodes.length > 1
     visible: active
 
@@ -26,7 +27,7 @@ Loader {
             horizontalAlignment: Text.AlignHCenter
             text: abbreviateLayoutCode(HyprlandXkb.currentLayoutCode)
             font.pixelSize: text.includes("\n") ? Appearance.font.pixelSize.smallie : Appearance.font.pixelSize.small
-            color: rightSidebarButton.colText
+            color: root.color
             animateChange: true
         }
     }

.config/quickshell/ii/modules/verticalBar/VerticalBarContent.qml

@@ -271,6 +271,7 @@ Item { // Bar content region
                         vertical: true
                         Layout.alignment: Qt.AlignHCenter
                         Layout.bottomMargin: indicatorsColumnLayout.realSpacing
+                        color: rightSidebarButton.colText
                     }
                     MaterialSymbol {
                         Layout.bottomMargin: indicatorsColumnLayout.realSpacing