have a look at this firm in germany. they do loads of colours as well as white. Quality of their clothing is very good, not had any saddle cloths if they are as good quality as the clothing you will not go far wrong.
Bartl..... they do them with either sheepskin lining OR without, the unlined ones are reasonable value & fit beautifully. They are shaped to fit the back, not flat like many makes.
I have a Bucas dressage one, it's fab, great shape and really easy to keep clean, comes up sparkling every time. Have used it at shows for the past 5 years and it's still perfect.