This is what I use
I have my geckos in the living room on either side of the TV (that i never get to watch)
So I put a lot of "Showcase" items in their enclosures to spiff them up.
Mopani Wood, Different Sedimentary Rocks, and my favorite the plastic Triceratops Skull.
I try to keep everything uniform and nice, but it's getting harder now that Exo Terra has switched their plaster color to brown. (Still don't know why the don't offer both)
The sand is a mixture of blue and natural white, and after washing 20 times it has merged into a calm "sky blue" that blends nice with everything else. They are good geckos and use the paper towel toilet in the corner for the most part, but Falcor (my SHTCTB male) sometimes rebels against conformity and leaves random presents which I then have to spoon out manually. I keep the sand nice and clean and as soon as it starts to look dingy it gets thoroughly washed. The problem with the coco and the moss is that it adds particles of plant matter to the whole "scene" which makes it look less clean and harder to wash. That's why I came up with the mesh pocket to put the moss in. It did do the job as far as keeping the cage clean and particle free, but like I said it wasn't flawless and just created different problems...