Well now I'm wishing I wasn't such a tightwad. I didn't buy the rose because they wanted $29.99 for it, and around here that's about $8 too high. I also WON'T pay full price for a plant without a tag. Dang. The Neptune I received bare root this year doesn't look alive.
It's possible I'll never find a rose that looks just like that because the dark buds may just have been caused by the freeze the night before.
Thanks for your suggestions, everyone! If you do see a Neptune with darker buds, let me know!