Well actually, I use yellow coloured butter..no problems. I’ve also used red to achieve pink without difficulty. Not familiar with “sugarflair” brand. As long as you use the tiniest amount of red, it should work. Try adding just a hint if yellow to the icing with your red. This might help. You red could be a red-red, a Rose hue red, a Christmas red…. can’t tell without seeing it….this changes the outcome.
Creativity is God's gift to us. Using our creativity is our gift back to God. Clarky's Cakes 😎