Ventura Cottage: Add colour to events in monthly calendar

Client brief:
Show the different coloured backgrounds to events based on tags
Method:
first go to admin/content/taxonomy/add/vocabulary and create a new taxonomy called calendar >
link it to event node type and add terms eg dropin, office, outreach, shop that reflect the
type of events that you wish to highlight.
then at node/add/event create a few test events all with different taxonomy terms
at admin/settings/date-time/formats add a new format g:ia and link it to a new format type
hourmin_g:ia > save