Congrats on your new home! I love the pergola over the porch.

Your best bet will be to check with nurseries in the area to find plants that will survive in your area with no shade. It appears you have a small garden on each end of the porch, I'd probably plant one all around, except for one area about 2-3 feet wide for a walkway, maybe in the middle of the long side. You are going to want to plant some taller leafy trees or evergreens far enough away from the porch so the roots don't become a problem, but close enough for some shade eventually.

For color from spring to summer, you are going to want nice, colored pots for "pop" with annuals in them. Annuals are flowers that bloom from spring to summer, but don't re-bloom the next year. With no shade you will need perennials that work in your planting "zone", plus don't need a lot of shade. Perennials are flowers that come back year after year like tulips, lilly of the valley and rhodendrons in the spring, peonies, black eyed susans, daylillies & other lillies, and hydrangea in the summer, mums in the fall. If lilac trees grow in Utah, you could consider them. They become large, and bloom in the midwest around Mother's day.

If the lack of shade bothers you, you could consider buying an all weather fabric "shade" and lace it through the planks on the roof of the pergola. Or maybe just do half and leave the other half uncovered. If this were my space, I'd add hanging lights around the edge for nightime use, and some solar lights in the garden.

Have fun!