Great work!
Is that a friction fit via grommet or glued in?
I wonder if there are any 4.5" options like that in clear/amber or smoke/ amber?

 

It's not glued, sort of stepped. Here's some pics. The led's/lights are 4 inch and the grommets are described as 4 inch as well. you just need to cut a 4.5 inch hole to use the 4 inch grommet. The pic in the previous post is with clear grommets and clear/amber leds, my jeep is silver and that works with the silver grille. The grille I practiced on will be painted a darker grey or graphite. For that grille, I have black grommets and black/clear amber led signals.