Smart idea pencil outline color darker flat icons - Stock vector

smart, idea, creativity, innovation, lightbulb, inspiration, think, concept, brainstorming, design, solution, pencil, draw, sketch, invent, art, bright, energy, illuminate, intelligence, strategy, imagination, insight, vision, creative-thinking, thought, conceptual, inventive, genius, brainwave, creative-idea, problem-solving, innovative-thinking, design-thinking, concept-development, outline, contour, icons, round, circle, circular, orbicular, solid, symbol, set, flat, plain, simple, isolated