I have to make a cake for my niece's bridal shower and I was planning on using an impression mat with white fondant. Her wedding color is navy blue and I wanted to paint the impressions in the fondant navy blue. I understand the recommended method is to mix gel color with vodka. Do I need to worry about the color possibly bleeding into the white fondant? And if I experiment ahead of time and achieve the color I want, can I save the solution? Do I need to refrigerate it?
Thank you all for your advice!