How to patch aggregate concrete to match?

I hope someone can give some suggestions for this. I've done quite a bit of searching and am having a hard time finding anything online to suggest the best way to patch aggregate.
My situation: I have an old aggregate concrete patio that a wooden porch was built INTO. Recently I tore out some boards on the porch, including 2 that were sunk down into the concrete. They pulled up out of the concrete very cleanly, but left 2 holes apprx 2x6 size in the patio. I'm looking for a way to fill the holes to match the rest of the patio...dont just want to do plain grey concrete. Suggestions on the best way to do this? Is it going to be tough to match the top level of the existing patio? Is there some pre-mixed aggregate out there I could fill it in with and be done?
I'm a novice when it comes to concrete so go easy on me. Thanks!

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