Colouring individual Sparkline data points based on value?

[HighTower]

Hi all,

This is a two-parter I guess.

1. Is it possible to set the colour of an individual data point in a sparkline graph?
2. If so, is it possible to set the colour based on criteria, for example above a certain threshold?

I'm hoping to use sparks to display how a set of measures are performing against targets. The graphs themselves are great, but aren't viable in this case if I can't format to show if each data point has achieved target.

I've google'd but to no avail, which I hope isn't an answer to the question already..

Cheers
HT