UnityEditor.ColorPresetLibrary.CreateColorSwatchWithBorder C# (CSharp) Method

        private static Texture2D CreateColorSwatchWithBorder(int width, int height, bool triangular)
        {
            Texture2D textured = new Texture2D(width, height, TextureFormat.RGBA32, false) {
                hideFlags = HideFlags.HideAndDontSave
            };
            Color[] colors = new Color[width * height];
            Color color = new Color(1f, 1f, 1f, 0f);
            if (triangular)
            {
                for (int n = 0; n < height; n++)
                {
                    for (int num2 = 0; num2 < width; num2++)
                    {
                        if (n < (width - num2))
                        {
                            colors[num2 + (n * width)] = Color.white;
                        }
                        else
                        {
                            colors[num2 + (n * width)] = color;
                        }
                    }
                }
            }
            else
            {
                for (int num3 = 0; num3 < (height * width); num3++)
                {
                    colors[num3] = Color.white;
                }
            }
            for (int i = 0; i < width; i++)
            {
                colors[i] = Color.black;
            }
            for (int j = 0; j < width; j++)
            {
                colors[((height - 1) * width) + j] = Color.black;
            }
            for (int k = 0; k < height; k++)
            {
                colors[k * width] = Color.black;
            }
            for (int m = 0; m < height; m++)
            {
                colors[((m * width) + width) - 1] = Color.black;
            }
            textured.SetPixels(colors);
            textured.Apply();
            return textured;
        }

 private void Init()
 {
     if (this.m_ColorSwatch == null)
     {
         this.m_ColorSwatch = ColorPresetLibrary.CreateColorSwatchWithBorder(14, 14, false);
     }
     if (this.m_ColorSwatchTriangular == null)
     {
         this.m_ColorSwatchTriangular = ColorPresetLibrary.CreateColorSwatchWithBorder(14, 14, true);
     }
     if (this.m_MiniColorSwatchTriangular == null)
     {
         this.m_MiniColorSwatchTriangular = ColorPresetLibrary.CreateColorSwatchWithBorder(8, 8, true);
     }
     if (this.m_CheckerBoard == null)
     {
         this.m_CheckerBoard = GradientEditor.CreateCheckerTexture(2, 2, 3, new Color(0.8f, 0.8f, 0.8f), new Color(0.5f, 0.5f, 0.5f));
     }
 }