'RangeHound' - Your instincts are correct.

'Re-Blue'? Krags were not 'blued' originally. Some minor parts got a nitre bath which gave them a 'flame blue' color. The Action, side-plate & magazine-gate were given case-hardened colors. The barrel was 'browned' which gave it a blue/black color. Some parts like the bolt and numbered face of the rear-sight leaf were in the 'white'.

During refurbishment prior to WW1, some Krags seem to have gotten some type of metal refinish, but, the different metal parts (IMHO) still took this in different shades and hues.

If a Krag is a consistent 'blue/black' color, this Screams 'Refinished' and markings and metal shapes have been sacrificed in the polishing process.

Such rifles are hard to sell and have to be priced for their utility value. Usually the value of the parts is totally gone, because no one wants refinished parts. Collectors want appropriate patina.

If the rifle in question has nice wood, (stock and hand-guard unbroken, with markings and contours intact), and a very good bore, I would guess $400 to $500 value. But, you better plan on keeping it. Resale is poor!