recolor.go

package render

func Recolor(cMap[color.Color]color.Color) Modification {
  return func(rgba image.Image) *image.RGBA {
    bds := rgba.Bounds()
    newRgba := image.NewRGBA(bds)
    
    
    for x := 0; x < bds.Max.X; x++ {
      for y :=0; y < bds.Max.Y; y++ {
        c := rgba.At(x,y)
        if c2, ok := cMap[c]; ok {
          c = c2 
        }
        newRgba.Set(x,y,c)
      }
    }
    
    return newRgba
  }
}