*Black-out ( White-colored )totally blocks out the light. It is always offered on Romans with Printed Fabrics, so that when the shade is lowered, the pattern is not broken.
*Dim-out ( White-colored) is a very slight "black-out". It does let some light in.
Otherwise, in most cases, you can choose the lining:
(If you order an "unlined" roman, you can request lining in the Special Request Blank, and you will be charge for that lining at the time of shipping, usually $50.00)
NOTE: You should read all info on each Roman, so that you know exactly what you are paying for.