From magenta to fire engine red, here are three icing recipes to create gorgeous shades.

FIRE ENGINE RED (left)
3 cups powdered sugar
5 tbsp milk
2 tbsp Red Velvet Color Kitchen Color
Orange Color Kitchen Color Packet (approx ½ packet or 1 tsp)

MAGENTA (middle)
3 cups powdered sugar
5 tbsp milk
3 tbsp Color Kitchen Red Velvet Color (1 full packet)

BRIGHT RED (right)
3 cups powdered sugar
5 tbsp milk
2 tbsp Red Velvet Color Kitchen Color
1 Yellow Color Kitchen Color Packet (approx 1 ½ tsp)