Randomize swatch for a color passed to a function in Flutter

I have a function that gets Color as an argument. I want to generate a list of random swatches for that color within that function. For example, if the color passed is Colors.amber I want a list like:

[ Colors.amber[100], Colors.amber[800], Colors.amber[500], Colors.amber[900], Colors.amber[300]... ]

Is it possible? Any advice or help would be appreciated. Thank you in advance.