This site may have been shared before and I just missed it, I thought it was helpful because it shows both correct birds and incorrect.
https://sites.google.com/site/creamlegbarsonline/gallery
I know this is an old post (almost a year ago), but the link illustrates some thoughts I have had.
Assuming you have a cream pair, and they are indeed both cream, there is absolutely no way for you to not get cream babies from them. Cream is a double recessive, for it to express you must have two copies, one from each parent. If both parents are cream, then they will both pass on a cream gene, making all of their babies cream.
What brings this to mind specifically is the first couple pictures of the hens with and without cream. I go back to my thought, if both of their parents are cream, how can they NOT be cream?
This is something that has been bothering me from the time I started studying this breed. I am going to say what is obvious. There are people that have bought pullets and cockerels that have turned out to be gold. If they are indeed gold and not cream, then they could not have been pure bred, because if they were, then there is no way for their birds to not have been cream.
Or there is something else going on.
Assuming the hens pictured that are not the correct color are from pure ig/ig breeding. Why are they not cream?
Going back to the posts that Gary just made about the dutch creams... I think it is possible that what we are seeing is not gold (when the birds in question come from two cream birds), but rather the results of some kind of modifier. I know there is going to be some head shaking (here she goes with her dogs again, lol), but bear with me. d/d is somewhat the canine equivalent to ig/ig. However, in a little of blue puppies (on black base), there is often a range of colors from dark blue black to silver. But they are all still d/d.
This is where it ties into that Gary said, and why I think that there may be some kind of modifiers that control the expression of ig. This is why the links to the dutch cream light browns say that it's not enough to have a check list and go, OK, cream, check.. but there has to be a selection of the color of the cream as well.
Either the birds that we started with (there is that we again, please forgive the presumptuousness) were cross bred, which is why there are gold birds, or there is something that is modifying the expression of IG.
To that, I would wonder if there is anyone here that has had cream birds produce gold colored birds. If not, then I'm sorry, I'm going to have to believe there is a cross somewhere up close. However if some one has had two creams produce something more gold than cream, then my thought is that there is some kind of modifier and that paying attention to that modifier is going to be very important to produce correctly cream colored birds, and if so, we know it can be dome, because the dutch have done it with their cream light browns.