UPDATE!!
Found some spare time with my friend who wanted to paint his brembos too. The calipers were sandblasted to remove the coat it had on and then the primer was applied the day. Here, my friend is with our compressor gun laying the final coat on his brembos and his lug nuts.
The paint was more matt when we changed the ratio to less paint, and more glossy with high paint ratio. We both achieved different results with our calipers.
Here are the end results!
The colour came out a lot darker than we anticipated but was acceptable. I had taken the paint off the celica words to bring it closer to the "spoon calipers" that we were trying to follow on.
The next step is the install. I have found some nice wheels which are 16" but are 5x100. Need to wait for SD to confirm that the front hubs off the zzt231 could be swapped into our corolla sportivo. Once that is done then everything will be rolling into.