Neal in my yard they go for tall and fragrant roses first followed by short and fragrant. Their least favorites here anyway are unscented roses. White Out and Home Run are not bothered as much. But I keep something they prefer or they'll move to any rose. I used to grow a lot of old garden roses that bloomed several times a year. The only parts left on some where the canes. Japanese beetles are why I started grow type 3 clematis and daylilies. They bloom in summer while the beetles are eating all the roses. Then the roses take center stage again when beetles are gone. As far as yellow goes (my favorite color) seems to be a popular color for all the worst rose bugs/insects.
I certainly hope rrd stays away from your garden. Best Wishes! Pat
