I've used a variety of peach, coral, and copper shadows in the summer, but this year my favorites are NYX's Prismatic Shadows in Golden Peach and Liquid Gold. I would say that the first is more of a coral shade than true peach, and the second is really more copper than gold, but both have a nice sheen that's not full of chunky glitter. My eyes are fairly hooded, so I like to apply these shades in the crease and blend them a little onto the brow bone to add a sort of warm halo glow around my eyes.
For eyeliner, bold makeup can look a little intense on fair skin, but I find using a bright color on the lower lash line adds a pop of fun to a summer look without being overpowering. My favorite summer shade is aqua blue, which complements peach tones since they're opposites on the color wheel--I typically use Almay's Shadow Softies in Seafoam, as it has an almost creamy formula that applies nicely with a liner brush and stays in place.
All of my favorite lip colors are from Burt's Bees, since they're easy to find in drugstores and come in a variety of formulas and hues. For a natural, everyday look I use the tinted balm in Zinnia, which is a true coral that applies semi-sheer. For an opaque shade with a soft sheen, I like the new gloss crayon in Santorini Sunrise, a natural peach. For a bold, opaque look I like the matte crayon in Niagara Overlook, a bright coral pink.