Paint wooden structure of pergola and windows

I recently got my pergola done in my backyard, however the person who built the pergola used the timber without painting it. so I want to get the pergola painted in dark grey and white combination. The pergola has wooden frame see through sliding doors. Also i want the windows of the house to be painted in same dark Grey colour inside and out side. The house has 11 windows and 1 main door. I require someone to bring their own material including paint, dark grey and white. I have attched picture of pergola and windows 2 windows are in back bedroom and one is attic velux.