Eto.Drawing.Graphics Slow - Clear() or FillRectangle()

Thank you @lando.schumpich. I missed the bitmap class methods. SetPixel() made the function instant. Python code is bellow.

def Swatch(color=(250,200,100)):
    bitmap = drawing.Bitmap(10, 10, drawing.PixelFormat.Format32bppRgb)
    col = drawing.Color.FromArgb(color[0], color[1], color[2])
    width = 10; height = 10
    for x in range(1, width - 1):
        for y in range(1, height - 1):
            bitmap.SetPixel(x, y, col)
    return bitmap