has anyone made the food color mist or is it just easier to buy the Wilton Misty Spray,
I need about five different colors and purchasing it can get expensive

Hello Lane and welocme to CC! You can "make" your own spray mist colors by diluting a little bit of color with vodka but you would need an airbrush to spray it on or brush it on with a paint brush. Otherwise the only other option is to by the Wilton sprays. Hope this helps.