White is the typical color of the Scotch rose, but color variants turn up ... or so I've read.

Sabine (1822) gave an account of the origin of the first double Scotch roses in assorted colors.

I am indebted to Mr. ROBERT BROWN, one of the partners of the firm at the above period, for the following account of their origin. In the year 1793, he and his brother transplanted some of the wild Scotch Roses from the Hill of Kinnoul, in the neighbourhood of Perth, into their nursery garden: one of these bore flowers slightly tinged with red, from which a plant was raised, whose flowers exhibited a monstrosity, appearing as if one or two flowers came from one bud, which was a little tinged with red; these produced seed, from whence some semi-double flowering plants were obtained; and by continuing a selection of seed, and thus raising new plants, they in 1802 and 1803, had eight* good double varieties to dispose of; of these they subsequently increased the number, and from the stock in the Perth garden the nurseries both of Scotland and England were first supplied.
http://bulbnrose.x10.mx/Roses/breeding/Sabine_Scotch.html