settings: remove color hardcode & tab radius, darken border

qml/SettingsDialog.qml

@@ -113,8 +113,7 @@ The prompt below is a question to answer, a task to complete, or a conversation
             }
             background: Rectangle {
                 color: genSettingsButton.checked ? theme.backgroundDarkest : theme.backgroundLight
-                radius: 5
-                border.color: "#fff"
+                border.color: theme.tabBorder
                 border.width: 1 ? genSettingsButton.checked : 0
             }
             Accessible.role: Accessible.Button
@@ -132,8 +131,7 @@ The prompt below is a question to answer, a task to complete, or a conversation
             }
             background: Rectangle {
                 color: appSettingsButton.checked ? theme.backgroundDarkest : theme.backgroundLight
-                radius: 2
-                border.color: "#fff"
+                border.color: theme.tabBorder
                 border.width: 1 ? appSettingsButton.checked : 0
             }
             Accessible.role: Accessible.Button
@@ -157,6 +155,7 @@ The prompt below is a question to answer, a task to complete, or a conversation
                     border.width: 1
                     radius: 2
                 }
+                padding: 10
                 width: parent.width
                 height: parent.height - 30
                 contentWidth: availableWidth - 20
@@ -515,6 +514,7 @@ The prompt below is a question to answer, a task to complete, or a conversation
                     border.width: 1
                     radius: 2
                 }
+                padding: 10
                 width: parent.width
                 height: parent.height - 30
                 contentWidth: availableWidth - 20

qml/Theme.qml

@@ -14,7 +14,7 @@ QtObject {
     property color userColor: "#ec86bf"
     property color assistantColor: "#10a37f"
     property color linkColor: "white"
-    property color tabBorder: "#ddd"
+    property color tabBorder: "#aaa"
     property real  fontSizeLarge: Qt.application.font.pixelSize
     property real  fontSizeLarger: Qt.application.font.pixelSize + 2
 }