I also purchased royal blue as I was also impressed with how well it worked at an auto show. It was like 2 for 30. Honestly I used it a few times and it is a royal PITA to get back off. I wasnt really impressed with how long it lasted either. The shine was average. (It does work great on stainless or polished aluminum though!)After my years of trying lots of products (and mind you I wont buy wax costing an arm and a leg). My go to for my true blue paint is poor boys black hole glaze applied by da polisher, topped with chemical guys black light by hand, topped with v34 spray sealer. That combo makes my dark blue car look black and like a mirror.
I highly reccomend any poor boys product or chemical guys. For a red car id suggest poor boys white diamond glaze, topped with pinnacle souveran paste. But the pinnacle is like 100$ I couldnt bring myself to purchase it personally.