I want to know the answer to the following question:
Is the color difference between heartwood and sapwood usually very subtle or conspicuous?
All the background I'm provided with is that "In species which show a distinct difference between heartwood and sapwood the natural color of heartwood is usually darker than that of the sapwood, and very frequently the contrast is conspicuous (see section of yew log above).". Is that enough to answer the question?
Answer: yes