I don't know where to find a good chart, but I do know some of the color interactions.
As a basic starting point:
Breed a Silkie to another Silkie of the same color, and you are likely to get more of that color.
(Exception to the above: blues do not breed true. When you breed two blues, you generally get 25% black chicks, 50% blue chicks, 25% splash chicks.)
Black with cuckoo works fine (produces cuckoo chicks and sometimes black chicks, depending on which parent had the white barring.)
Black with blue/splash works fine (produces various numbers of black, blue, and splash, depending on which ones you are breeding together.)
Black with lavender can work (produces black chicks that carry the lavender gene, but breeding those chicks to lavenders can produce more lavenders.)
For most other colors, it is probably best to keep them pure (not mixed with any other colors.)
Crossing colors will typically produce cute, healthy chicks. But the chicks may be in colors that Silkies are not "supposed" to be, and some colors or combinations that don't really have names. Whether that is a problem depends on what you want to do with the chicks (keep them as pets, sell them, take them to shows, etc.)