paint it with bright orange为什么要用with

paint sth with sth 用…涂; 用…画
with "用.”
如：
The doctor painted my wound with ointment.
医生给我的伤口敷上药膏.
He painted some bees with little spots of color.
他在一些蜜蜂身上点上颜色.
The walls were painted with flowers and scenery.
那几面墙上画着花卉和风景.
The ancient vase was painted with pastoral scenes.
这古老的花瓶上绘饰着田园景色.