I would like to plot a joint distribution as two normalized histograms. One distribution has a weight w and the other has a weight 1-w. Unfortunately, I cannot figure out how to apply the weight to a normalized histogram.

```
using Plots, Distributions
y = rand(Normal(0, 1), 10_000)
w = .5
histogram(y, norm=true, weights=fill(w, 10_000))
```

The density does not change with the weights. Any help would be greatly appreciated