private void BackgroundColorsForLinux()
{
var bmp = new Bitmap(_menusToolStrip.Width, _menusToolStrip.Height);
using(var g = Graphics.FromImage(bmp))
{
using(var b = new SolidBrush(_menusToolStrip.BackColor))
{
g.FillRectangle(b, 0, 0, bmp.Width, bmp.Height);
}
}
_menusToolStrip.BackgroundImage = bmp;
}