Hi all, for what it's worth the wood itself has a large part of its color. Some years the gamrain is tight some years the grain is loose. Making pellets also has a bunch to do with color. Newer dies make it easier to press and older dies make for a hotter die during production so it almost toasts the wood a tad darker. Sometimes we make our 100% hickory that is light in color and sometimes we make our 100% Hickory and it turns out darker! We never use bark, in our opinion bark burns quicker and leaves more ash. Honestly, color means nothing. We've seen the same dark and light in our new sweet maple. Taste no difference!
Remember, wood is grown and NOT manufactured! Nature is NOT an exact science! Hope this helps.
Smoke On
Chris