Putting together what you are calling a complete set might be next to inpossible.
I have 30 to 40 from older sets. What they called red in the say the 80's or early 90's does not have to be the same shade they are calling red today.
All of mine are scanned and in storage, no way to tell from scans about the shades.

I have dozens of HHR also. Shades are different on some colors.
HHR info is about to be lost forever. GGS has been sold.