Coloring in this sentence is a gerund because it is acting as a noun.
Hope that helps.
It is not either of the last two options because they would both have the opposite effect on your audience then you would want them to have. So out of the first two choices, I think Using a tone of frustration when describing how difficult it is to eat with forks and spoons would help you relate to the audience the best, making your argument the most compelling. Choice B is what I would go with.
If you hear their voices it can help you guess how they feel in the situation as well as guess the tone of the story.
In Beowulf when the dying Beowulf gives Wiglaf his gold necklace, the gesture means that Beowulf is passing on the rulership of Geatland to Wiglaf