private void colors_listView_SelectedIndexChanged(object sender, EventArgs e)
        {
            if (Layers.CurrentLayer != null)
            {
                if (colors_listView.SelectedItems.Count != 0)
                {
                    Layers.CurrentLayer.Foreground = new Picture(Layers.CurrentLayer.Foreground.OriginalImage);
                    effects = new Effects();

                    switch (colors_listView.SelectedIndices[0])
                    {
                    case 0:
                        selectedColor = ColorChannelType.RGB;
                        break;

                    case 1:
                        selectedColor = ColorChannelType.R;
                        break;

                    case 2:
                        selectedColor = ColorChannelType.G;
                        break;

                    case 3:
                        selectedColor = ColorChannelType.B;
                        break;
                    }
                    effects.ChangeColorChannel(selectedColor);

                    effects          = new Effects();
                    pictureBox.Image = Layers.CurrentLayer.Foreground.EditImage;
                }
            }
        }
        private void RefreshColorChanelsView()
        {
            if (layers != null)
            {
                ColorChannelChange();

                colors_imageList.Images.Clear();

                for (int i = 0; i < 4; i++)
                {
                    Layers.CurrentLayer.Foreground = new Picture(Layers.CurrentLayer.Foreground.OriginalImage);
                    effects = new Effects();
                    effects.ChangeColorChannel((ColorChannelType)i);
                    colors_imageList.Images.Add(Layers.CurrentLayer.Foreground.EditImage);
                }

                for (int i = 3; i >= 0; i--)
                {
                    colors_listView.Items[i].ImageIndex = Math.Abs(i - 3);
                }

                Layers.CurrentLayer.Foreground = new Picture(Layers.CurrentLayer.Foreground.OriginalImage);
                effects = new Effects();

                colors_listView.Refresh();

                pictureBox.Image = Layers.CurrentLayer.Foreground.EditImage;
            }
        }