Painted lampshade

My husband brought home a free lampshade, covered in fake silk of a dark, swampy green color. I decided that it would work best with my bedroom floor lamp, but not in that color, because the lamp is in shades of emerald green. I experimented with bleaching the lampshade, but the bleach had no effect on the synthetic fabric. So I went back to my original idea of painting it, using free white paint from the county hazardous waste site. I did two coats, with the brush strokes in one direction on the first coat, and in the perpendicular direction on the second, which adds a subtle texture between the raised designs on the fabric. It is nearly dry now, and looks like it will fit in well.