I used to work for MAC so here's my opinion -
Some of my favorite MAC colours for blue eyes, depending on how natural or dramatic you want are;
Neutral or Peach bases - Ricepaper, Retrospeck, Naked Lunch, Jest
Neutral/Browns/Bronzes - Soba, Wedge, Bronze, Satin Taupe, Amber Lights.
Greys and Dark Blues look good too - Print, Scene, SilverRing, Contrast
Brighter, more adventurous shades - Melon pigment (in their loose pigment range) and Sushi Flower are lovely. Corals and peachy orange colours can really make blue eyes "pop" as orange sits opposite blue on the colour wheel.
Lighter blues will look quite icy on blue eyes so generally steered clear of unless you are good at combining them with darker neutral shades like grey or black.
A lovely Peachy or coral blusher too. Anything from Dainty in their mineral blush collection to Pinch O Peach or Fleur Power would be nice. Or in their cream blushers and cream colour bases, Ladyblush (paler), or Fabulush (bit more dramatic, depending on how you blend it).