Just learning gumpaste flowers,books always refer to use nontoxic pastel caulks to brush on detail. What?Where? in Ontario Canada if anyone knows ??

I googled "pastel chalk canada" and came up with lots of links, including this one:

http://www.ape2zebra.ca/chalks-12-colors-mercurius-blackboard.asp

Most stationery stores or craft stores will sell them.

To add colour to gumpaste flowers, first run a sharp knife down the side of the chalk to produce a fine dust and then use a brush to apply the dust to your flower. Best to gradually build up the colour so don't load up your brush too much. Using two similar colours will give a better depth of colour.

Hope that helps,
Cris.