Color Changing Help

This may not be the right place to post this, but since this is about other software, I thought it was. Can someone help me with this image?

I am trying to change the color of the wood using GIMP to match this
for a scene that I am working on. I know nothing about GIMP except basic color manipulation. Can someone who knows this please help me or do this for me if it doesn’t take too long?

So in about