"scrollbar-color" and "text-decoration-color" properties' values are not being processed

[MiaKani]

The "scrollbar-color" and "text-decoration-color" properties' values are not being processed. When the input values contain uppercase letters, "clean-css" should change them to lowercase letters on output like it does for all other CSS properties.

Environment

• clean-css version: 5.3.2
• node.js version: 18.18.1
• operating system: Windows

Configuration options

cleancss --debug --output "C:\CSS.css" "C:\CSS.css"

Input CSS

• {
  scrollbar-color:#AAAAAA #FFFFFF;
  text-decoration-color:#EEEEEE;
  }

Actual output CSS

*{scrollbar-color:#AAAAAA #FFFFFF;text-decoration-color:#EEEEEE}

Expected output CSS

*{scrollbar-color:#aaaaaa #ffffff;text-decoration-color:#eeeeee}