Outdoors on a cloudy/overcast day is a good one to try. A slight variation is to shoot just inside of a garage. You get most of of the daylight and can set up so the reflections are from a dark ceiling and thus are minimal.
In case you missed the comment from bothKalypso and VTphotog Get a tripod - a good one. You will use it for more than just this project.
True color is not a trivial exercise. You can try the Wall*Mart/CostCo/Joe's Bait Shop/... labs simply because they are cheap to try. If you are really fussy, likely you won't have much choice but to go to a pro lab.