Q.I Have Two Huge Ceramic Pots On My Balcony And Would Like To Have A Large Copper Coloured Spikey Plant For It
I’m in British Columbia ( Vancouver ) The patio is facing west and gets full sun. The pots are well-drained with a large saucer to contain drainage. They are protected by a standard height clear glass enclosure.

Certified GKH Gardening Expert
You could get a perennial agastache in that color. But you might have hummingbirds and butterflies trying to land through the glass. Something like a tall cacti/succulent would look nice.
These articles should help:
https://www.gardeningknowhow.com/ornamental/flowers/fgen/full-sun-plants.htm
https://www.gardeningknowhow.com/special/xeriscape/desert-plants-for-full-sun.htm