【数字签名】toast文案显示颜色问题修复

PDF Office/PDF Master/Class/PDFTools/PageEdit/OCPart/CustomAlertView.swift

@@ -85,7 +85,7 @@ class CustomAlertView: NSView {
         
         messageLabel.font = NSFont.systemFont(ofSize: fontSize)
         messageLabel.textColor = NSColor.white
-        messageLabel.backgroundColor = NSColor.red
+        messageLabel.backgroundColor = NSColor.clear
         messageLabel.isBordered = false
         messageLabel.isEditable = false
         messageLabel.usesSingleLineMode = false