Once the "Grid" is placed using the "Place Grid" tool how to change the symbology of it after is placedl?
The only way to change the level color of Grid lines is by choosing a different part from the "Drawing Settings" dialog under the "Grid Lines" tab and click the "Browse" icon. If the parts available do not have the color/style that you wish to use, you can always create a new part with the desired symobology.