Ключевые слова: activity, american, art, background, ball, brick, bright, college, competition, contour, design, equipment, field, flat, football, fun, game, glowing, goal, graphic, icon, illustration, isolated, lace, league, leisure, light, line, linear, lineart, neon, object, outline, oval, pigskin, play, power, professional, recreation, rugby, score, sign, single, skin, sport, symbol, team, touchdown, wall,