Is this for heat, or just so they can see (with a separate source of heat being provided)?
I ask cuz those compact fluorescents put out next to no heat and won't do you any good unless you have another, very significant, source of heat.
People normally use high-wattage red bulbs (floodlight or heatlamp bulbs) because you NEED the high wattage to convert to heat, the CFLs won't do it.
Good luck,
Pat