The company that makes Cetol Marine also makes other varieties of Cetol that come in multiple colors. The yard that did my boat this year actually said they used one of Cetol's deck products because they like the color better and feels that it holds up as well or better. It does look nice. If nothing else, you could check with Cetol tech support to see if Cetol Marine is compatible with their other products and start with one and topcoat with the other.
a link to the "other" Cetol.