A New Quilt Project

Our friends' daughter (and husband) are going to have a baby. I found out that the colors of the babys' room are grey and white. I had seen a quilt I loved, and finally found the pattern for it. I want to do mine like this one, but with grey and white.  I cut out all the five inch squares today. I thought I still had to get white and white thread, but I already did get some. 

 This is the pattern, and you can find it here.  They're having a boy. I want to get it embroidered with his initial, too.