Hi Hazel
Our Roman Blinds have the below options for lining:
Standard White Lining:
Blackout White Lining:
Standard Ivory Lining:
Blackout Ivory Lining:
Thermal Ivory Lining.
For thermal properties, I would recommend the blackout and thermal options, which are available in white and ivory. The backing of the fabric will therefore not be silver.
I hope that helps.
Thanks,
Sophie