Unfortunately you can't have custom armor MODELS in vanilla minecraft. You need modded for that.
You can have infinitely custom weapons etc etc. (And hats)
You can use a diamond pickaxe and then with a damage value (so the durability) to map them to custom things.

Hey there,

I am trying to import a schematic in the latest Cubik Studio, unfortunately the new Concrete blocks are not properly converted to the right colors.
Same for the stained glass
Is there anyway I can configure this myself/fix this?

Best regards,
Thomas