They are not the same color. 'Lagerfeld' is a cleaner "blue" shade while 'Stainless Steel' tends more towards gray. I have always sought out lavender roses and have found 'Lagerfeld's' color to be somewhat unique: a crisp light bluish lavender that glows in afternoon shade. Most lavenders tend to quickly fade in full sun; especially in Southern California. Having said this, culture, environment, and soil chemistry play an important part in rose colors. For some growers the two roses might approach the same color, but not from my experience. I also recommend the Hybrid Tea 'Lady X,' which is pale pink with a mauve cast. It's a beautiful flower form and a strong growing plant; however, placed next to other blue roses she will look pink, while planted next to pink flowers she will look mauve. A very subtle color that blends well with silver, gray, white, and pastel shades. Finally, the old HT 'Intermezzo' is one of my favorite lavender roses. A clean 'Sterling Silver' color with the fragrance & quartered form of David Austin roses yet grows compactly while staying under two feet. 'Intermezzo' was hybridized by Pedro Dot and introduced in 1963. It's one of the first primary hybrids from 'Grey Pearl,' the original stud rose for all lavender/mauve colored roses. Vintage Gardens sells both.

I have always read this rose is hard to grow , but I planted on an optimistic day last fall and it
overwintered in zone 6b and set alot of buds by May 12 . A dab of blackspot . Diana