Actually... you can use something like black or brown filler for a bit of a "dye" effect, but the effect wont be as pronounced or with the same depth that dye has. The filler will seep into the micropores, and the wood will be colored. You'll need to be very careful sanding since the penetration will be only very slight. And, the "shimmer" will be lost, since the clear coat fills the micropores and makes "lens elements" of each one. If you fill those micro pores with grain filler, you totally lose the depth of the shimmer. But... it will yield some sort of result. Doing dye be mo'betta in most circumstances.
