Well, they're in, they work, and they look factory!!! Here's a pic of the reinforcement plate from underneath -
Here's how they look from the top - I just had to dye the plastic caps on the buckle and shoulder part -
And here's how they look all finished - the color is a perfect match for the OEM front belts as you can see in the pic. I'm sorry my interior looks like two different colors - stupid flash!
Thanks to all of you guys for the great ideas, it was a huge help in getting this thing done and legal!
Edit: Don't worry, my son doesn't ride in the back without his booster seat, he was just showing the belts off and I had to take his pic there.