@Jwsemo is right in saying the tassels should be black (or VERY dark brown) and really should be that way for a few days in my experience. Honey Select is most definitely yellow when ripe. Its also yellowish up to a week before being ripe, so it seems as though you either picked yours REALLY early of you have some mislabeled seed. But early is likely…because the kernels on mature HS are actually very large (as are the ears) so if you look at it a week or more early it could look like it is almost mature white corn. I really hope you didn’t pick a lot of it too early, because it REALLY sweetens up the last week so you won’t get the true wonderfulness of HS until it matures. I’m not surprised to hear that you’re having a good corn year…this was undoubtedly the very best year I’ve ever had. My HS was indeed “supersweet”, had large ears, full ears, was still tender, etc.
I have always read that honey select doesn’t have to be isolated from MOST other corns. My crop was 18 feet away from a 30 acre stand of field corn that was at the same stage as mine and it didn’t affect it at all. I encourage you to do a simple google search using 3 words" “Honey Select Isolation” and you’ll see dozens of sources saying it doesn’t have to be isolated from most other corn. So don’t worry toooo much about that. (Though there are exceptions)