They don't make women's in 45, I'm afraid. I wish they would. Women's feet are getting larger in general, but the cycle shoe manufacturers have not kept up.
That red vernice (the gloss red finish) is available on one or two styles of men's Sidi that are only available in Europe. You might be able to bop around on some euro sites and find a men's shoe that might work. Most of them will be color-matched with black though, not white.