Yeah, color is a cue system—teal usually signals calm or coolness, gray can feel sterile or serious. In UI, I treat it like a coding variable: you set a value, but you have to make sure it’s readable, accessible, and consistent across screens. Use a primary hue for main actions, a secondary for secondary actions, and a caution color for warnings. And don’t forget contrast ratios; a bright button on a bright background is like shouting into a quiet room—you still get lost. So, pick colors that reinforce the message, test them, and keep the palette tidy.