 What is Hilary's tone described as "dark" when he remarks that there will be people interested in using his before-shave lotion?
They manufacture simple compositions like polishing waxes and sell them from door-to-door. Some groups have built up tidy little bank accounts which are available for later educational expenses." Marjorie put back her head and laughed, and I was forced to join her, for we both recognize that my understanding and "feel" for commercial matters—if I may use that expression—is almost nonexistent. "Well, sure, I suppose we want to," said Hilary. "No, they're formulations—you know, mixtures. "Some," said Hilary, "and I've got a home laboratory." Denatured alcohol, glycerine, water, a little color and perfume. Men won't use cosmetics and junk, but if they didn't have to admit it, they might like the shave lotion." He said suddenly, "Gosh, I think I know how to make a—what do you want to call it—a before-shave lotion." Peter Cope waved it off by remarking that they'd each do what came naturally. On the other hand, they pondered at some length about a name for the organization, without reaching any conclusions, so we returned to the problem of what to make. I wished that the youngsters weren't starting out by inventing a new article to manufacture, and risking an almost certain disappointment, but to hold my guidance to the minimum, I said nothing, knowing that later I could help them redesign it along standard lines. Most of them were impractical, of course, for a group of children to attempt, but several of them appeared quite attractive. Tommy, for example, wanted to put tooth powder into tablets that one would chew before brushing the teeth. He thought there should be two colors in the same bottle—orange for morning and blue for night, the blue ones designed to leave the mouth alkaline at bed time. Hilary, reluctantly forsaking his ideas on detergents, suggested we make black plastic discs, like poker chips but thinner and as cheap as possible, to scatter on a snowy sidewalk where they would pick up extra heat from the sun and melt the snow more rapidly. Doris added to this that if you could make the discs light enough to float, they might be colored white and spread on the surface of a reservoir to reduce evaporation. These latter ideas had made unknowing use of some basic physics, and I'm afraid I relapsed for a few minutes into the role of teacher and told them a little bit about the laws of radiation and absorption of heat.
 He senses that Donald is underestimating the potential of his good idea
 He senses that Donald is going to dismiss the idea because it is too costly  He senses that Donald is scheming to patent the idea for his own profiteering  He senses that Donald is beginning to understand his malicious intent for the before-shave lotion  He senses that Donald is underestimating the potential of his good idea