Do you mean the white sand is too bright and stressed the fish? If so I’m out as I don’t want thatWhite sand has one drawback...it can affect the fish. This is why I use Quikrete Play Sand, it comes in two shades, a "natural" tan colour, and a dark grey. I have the latter because that is what Home Depot here carries. The grey is a mix of black, white, grey, beige...and I have never had it "look" dirty even in my cory tank of 40 cories poking into it continually, and I never "clean" the substrate in their tank, they keep house very well!
There are ways to lessen the detrimental effect of white sand on fish, such as using a lot of hardscape and dried leaves to cover it, and reduced overhead light (this reflects off white sand) with floating plants.