If you have a particular colour in mind you need to get animals with a known genetic make up to breed that colour. This is not always as easy as it sounds as, though many animals will display that colour (their phenotype- what they look like) their genotype (their genetic make up) may mean they carry different colours in their genes which can be expressed depending on who they are mated to.
The black eyed cream is a recessive gene symbolised by the letter e. Recessive means you need two of the gene for it to be expressed as that colour so it would be ee. If there is only one e present the hamster would be likely to be a golden carrying BE cream but it could be another colour if it had another pair of recessives lurking in the background.
To definitely get creams you need parents who are PURE BE creams not carrying anything else or say two other colours definitely carrying cream. Mating a pure golden to a pure BE cream would give 100% golden babies because each would only have 1 cream gene so it would not show.
If you then mate one of these babies to a BE cream you will by the laws of genetics get 50% golden carrying BE cream and 50% pure BE cream. Mating two pure BE creams will always give 100% pure BE cream. It can be quite hard to get a pure line as when you are looking at breeding other factors must be taken into consideration such as type and temperament as it is not just the colour that makes a show hamster correct.
Most are outbred to different colours to richen colour, improve type and size as doing this brings in new genes which will improve and enrich the line. You need to be very strict about keeping records so you know exactly where your lines are going and what you are aiming to achieve.
So in a nutshell, your aim must be a good breeder who knows their lines and parents who are either BE cream or carry it. Red eyed cream is another story so I wont go in to that now
By the way if your male is banded you are bringing another gene in which is semi dominant. depending on whether he is pure banded BaBa or heterozygous Baba he may breed only bands (pure) or some of each depending on who you mate him to. Unless the breeder knows the lines you may not know whether he is is pure or not so you may not get straight creams from him.
How do you Start A Cream Line?
but I'm sure there is someone here that can lend some advice. Please be sure to post in the appropriate area next time. I'm going to move this thread to "Breeding Hamsters" 
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