[RoyBoy]

I haven't used traditional oil-based paste wood filler in quite awhile, but from what I remember, when applied to raw wood, the coloring in the filler will stain the wood as well. With mahogany, this may get you the color you're looking for. Some people seal wood before grain filling to avoid coloring the wood, others sand back to bare wood after filling and then proceed with any coloring they want to do, it's all a matter of preference.

If you haven't filled mahogany before, I'd caution you that it takes more than one application of filler to get to flush. Some fillers tend to shrink back after leveling (oil-based definitely does).

When filling and coloring, one step not to skip is sealing in the color and filler with a sealer before top coating. Just make sure the filler is fully cured first. It's a lot of steps, but worth it in the end.