grey yarn!

just got the yarn for the grey blanket. 3 packages of 10 of cashsoft dk in thunder. but one of them is from a different dye lot! one number different. do i complain for $5.00 a skein? maybe this is why it was on sale? i don't think i can see a difference but it sometimes shows up in the knitting. at least it is not a difficult color to match like red or something. i'll spend a day thinking about it.