优化

app/src/main/java/io/legado/app/ui/book/read/ReadMenu.kt

@@ -200,6 +200,7 @@ class ReadMenu @JvmOverloads constructor(
         tvFont.setTextColor(textColor)
         ivSetting.setColorFilter(textColor, PorterDuff.Mode.SRC_IN)
         tvSetting.setTextColor(textColor)
+        vwBrightnessPosAdjust.setColorFilter(textColor, PorterDuff.Mode.SRC_IN)
         vwBg.setOnClickListener(null)
         llBrightness.setOnClickListener(null)
         seekBrightness.post {