Ok the boot inner complete The colour is the blue grey the same as the firewall. Seam sealing was challenging as the original tar like material is not procurable. We have used urethane. To create that original look we used a 15mm artist brush with hard brisilles to create a copy of what GM had done.
We only have one more application for the blue Grey and that is under both wheel houses. The paint was applied directly over the proof coat. The edge of the rails are masked to stop over spray. Of proof coat and colour.