I'll enjoy it while it lasts !
All wood changes hues over the years, the more vibrant ones are just the most obvious. It is a former living material that now is not living, so obviously you can expect some changes with that. Much depends on environment/temperature as well. I have year old cut padauk, no visible change as of yet. I'm a big walnut fan, so I'm good with brown, whenever its ready !
No ill affects from padauk dust either. In fact, its dust is generally heavier and finer than most other woods, resulting in less airborne.
Certainly a lot less insidious than MDF, I hate cutting that messy, chemically loaded stuff.
I got a good dust containment system, and am often not even around when making a cut. Out of the 3.5 hours it took to cut, I was there for maybe 45 minutes of that, and much of that during the finish pass, when very little dust is generated or raised ... So I'm not overly concerned about spitting up gooey red globs any time soon.