I just want the factory matte blue finish to match the receiver.
How odd! I have the same affliction. Since we are not related it is probably some sort epigenetic thing.

I recently put a 243 barrel from a Stevens 200 on a Savage 10. The matte on the Savage 10 did not match the "sorta grayish" matte from the Stevens. So! What to do? I got out my can of Rust Oleum flat black and sprayed. After a day of curing I got out my can of Minwax "satin polyurethane" spray and sprayed again. Now everything matches and it looks great. Once it "cures" for a few days the finish is fairly stable also. Is this wrong?