I'd like to find a way to use a coloring function for the plot of my time series based on another time series (on the same time frame).

For example:

BTC = FinancialData["BTC/USD", {{2013, 1, 1}, {2013, 1, 31}, "Day"}]
wd = WeatherData["Chicago", 
  "Temperature", {{2013, 1, 1}, {2013, 1, 31}, "Day"}]

Are two different time series on the same period and the same sampling time. I may want to plot the first one using a color function of the second one. Like:

DateListPlot[BTC, ColorFunction -> "TemperatureMap"]

But with "TemperatureMap" based on wd. Is that possible?