Open the Griegsend_1.txt file in any text editor and do a find and replace. It's Ctrl+H in notepad, where it says "Find What:" put in "153, 153, 153" (without the quotes). Where it says "Replace With:" put in the rgb value for the color you want the lines to be. I.E. "0, 0, 0" for black or "255, 255, 255" for white and click "Replace All"
As for the labels, they are usually in the second layer file Griegsend_2.txt and if you use the MQ2 labels you can just clear out that file of the ones that you don't want duplicated.