Wood advice
The original was french walnut. Over time and exposure they do lighten up, but originally a darker brown.
Many redo thier own, reglueing, repair, replace, and relaminate with new veneer. There are vendors who do this work from yours or replacement.
Along the way several owners have personalized the wood with more exotic species such as zebra wood, burled walnut, etc. as the possiblities are nearly endless.
From time to time, members offer spares they've done. And there are several articles online explaining the process.
Best of luck.....