On the lower right-side of the picture, the red cap is the high pressure port, the blue cap behind and below the red is the lower pressure port (points towards the front of the car). If your AC has been converted to 134 this is what you should see, and by the way if your ports have not been converted to 134 style you won't be able to connect using the adapters from C Tire.
C Tire carries a similar AC refrigerant under the brand Red Tek, none of the aftermarket refrigerants are recommended by the OEMs or AC professionals. In other words use at your own risk, some have had good luck with them and others won't touch them.