It is not quite clear to me what you want to do. Do you want to:

- Plot, say, 3 curves, with different color, e.g., one red, one blue, and one green?, or
- Do you want to plot one curve which changes color from, say, red to blue, along the curve?

Case 1.a: Julia v. 0.6.x allowed to make a vector of colors using the `linspace()`

function, something along `linspace(colorant"red",colorant"blue",5)`

would make a vector of 5 colors in the range from color `colorant"red"`

and color `colorant"blue"`

.

Unfortunately, function `linspace()`

has been removed, and the replacement, `range()`

doesnâ€™t support color argument. This is really unfortunate!

Anyway, the `Plots`

syntax is that colors should be a row matrix, so colors in a vector need to be converted to colors in a row matrix.

You can, of course, still make the row matrix of colors manually:

```
plot([sin,cos,atanh], lc=[:red :blue])
```

Here, the list of functions will cycle through the row matrix of line colors.

Case 1.b: colors from color gradient.

Use a built-in color gradient, or design your own. Say you want to make your own, `my_cgrad`

â€¦

```
my_cgrad = cgrad([:red, :yellow, :blue])
```

makes a color gradient that starts in red, goes through yellow and ends up in blue. You need a minimum of two color elements in the argument vector.

To pick plot colors from the color gradient, do the following:

```
plot([sin, cos, atanh], palette = my_cgrad)
```

Case 2: Suppose you instead want to change the color along the line â€“ perhaps mainly useful in parametric plots. This can be done as follows:

```
x = range(0,stop=2pi,length=50)
plot(sin.(x),cos.(x),lc=my_cgrad,line_z=x)
```