优化主题颜色

app/src/main/java/io/legado/app/ui/widget/prefs/NameListPreference.kt

@@ -36,10 +36,12 @@ class NameListPreference(context: Context, attrs: AttributeSet) : ListPreference
         )
         if (v is TextView) {
             v.text = entry
+            if (isBottomBackground) {
                 val bgColor = context.bottomBackground
                 val pTextColor = context.getPrimaryTextColor(ColorUtils.isColorLight(bgColor))
                 v.setTextColor(pTextColor)
             }
+        }
         super.onBindViewHolder(holder)
     }