Automatic color generation:

Since I don't know ahead of time the number of data values on my chart, I will need to automatically generate the colors for each value. Do you have any support for this?

Yes. If you didn't specify colors for some series or/and categories chart component will create it for you. (See previous sample). But I suggest to use color themes with a number of predefined colors (see section "Using Theme" in the Manco.Chart.Demo application).