Trying out flat-back amigurumi eyes, need suggestions on the type of glue and opinions on which eye color is the cutest

Recently I've seen a lot of these cute amigurumis with eyes that have very pretty eye colors. So, I thought to give it a try and I bought 6 different colours. They are like resin beads, but flat-back and THEY LOOK AS CUTE AS THE PICTURES I'VE SEEN ONLINE. Now I can't decide which eye color matches best and I'm hoping to see what others think, also I usually use the black colored safety eyes, and I've never tried glueing accessories on my amigurumis before other than to keep crochet hair in place, so I would really appreciate some glue suggestions, I'm not sure if I should use hot glue and I worry if I use craft glue, it won't stick that long and get brushed off/fall off. In the pictures there, I just used double tape as a temporary measure because I really don't what to ruin my bunny head if I simply use the glue I currently have with me.