Subject: Can I safely make my own colored road flares?

As a Scoutmaster, I use road flares in my campfire program...the flares 
are used to ignite the tinder ect..the impact of lighting a fire remotely 
using rocket engine igniters to light the flares grows less with each use 
because I cannot find any different colored flares, only the red safety 
ones seem to be available. Can I make my own safely and cost effectively 
and if so how, and where would I purchase the chemicals and obtain mixing 
instructions? Any help would be greatly appreciated.
Thank You.

Re: Can I safely make my own colored road flares?