flange extender

Anyone know of a fange extender that I can install on my cast iron flange to bring it up 1"(new tile floor after complete).Can I get it at 1/2" increment ?
Do suiox make them? Also is all johnny bolts locations same on all toilet? I will be replacing the eisting toilet.

Attached is my flange that will need to be extended.

The two bolts is to accept the spacer or extrender.
after the last spacer I will cap oit off wit a nut.
Sit atop this would be wax ring.

The blue ring only holds the closet bolts.

It's not considered a flange extension.

flange

I would not use the blue flange in the first place. But how else I would do it would depend on what is UNDER the blue flange, which I cannot see.