I use Prismacolor Verithin VT 734 white and VT 734-1/2 warm grey. I also use some other brand, but I am not at home right now and I don't remember their names and numbers. Jerry's Art-a-Rama and Dick Blick art supplies have colored pencils available on line. In my experience a hard lead is preferable to a soft lead. It keeps the lettering sharp. The soft ones are intended for blending. I do use soft lead pencils for weathering.
