To paint or apply color (with paint, dye, etc.) to a surface — e.g., coloring a picture or painting a wall.
子どもたちは図工の時間に絵に色を塗った。
The children colored the picture during art class.
古い机にニスを塗って色を塗り直した。
I varnished the old desk and repainted it.
外壁を白に色を塗る工事が来週始まる。
The work to paint the exterior wall white will start next week.
プロの職人に家具の色を塗ってもらった。
I had a professional craftsman repaint the furniture.