Hi Ted,
Welcome to this Microsoft Project newsgroup
Other than using a vba routine, you can't individually colour tasks like you
can in the Gantt Chart view. However, you could insert a column in the Gantt
Chart view for the Marked field and then select the task(s) you want the
same colour for and change the No to Yes. Then in the Calendar view,
Format/Bar Styles.../select Marked and change the colour. You could use a
series of customized fields with IIF statements seting up a condition and
marking those that comply, but there's only one Marked field.
FAQs, companion products and other useful Project information can be seen at
this web address: <
http://www.mvps.org/project/>
Hope this helps - please let us know how you get on

)
Mike Glen
MS Project MVP