I have made a replacement chicklet style saddle. In my case for a EA20. The white pieces do sit in a black plastic carrier. Then the whole assembly sits in the bridge, on a UST. Having said all that I think you could make 6 individual pieces that sit directly into the bridge, on top of the UST, w/o the black plastic carrier. As long as the contact points (where the individual white pieces make contact with the strings) are in the right spot you should be fine. It's tricky even with the carrier. The angle of each piece is slightly different. If the guitar has good intonation now, then it's a simple matter of replicating each piece. You could also cut a single piece, more conventional saddle. Again, you just need to make sure each contact point is in the right spot.
I made my pieces from bone and used a dremel tool to cut each piece. It was a bit tedious, but not technically hard.
One other thought, even if you have Colossi cut new pieces you will likely need to do a bit of hand sanding to get the action and intonation correct.