Yes you can colour almond paste, but use the cel paste colours, not food colouring from shops that’s runny, …. I’m not a marzipan lover either. Your design sounds wonderful … Btw, there is a way to get sharp edges with marzipan under your fondant as I like sharp edges too. You need to take your cake and cut out top shape, lay it on, then measure width around cake and height and cut out rolled out marzipan to size and then lay it around the edges of cake so it meets flush with top layer… Use your smoother to meet the edges properly, then let it dry for a day minimum and then you can cover with fondant to get sharp edges. :) here is one I did… Bad pic sorry.. Only one I could find at short notice
You must never limit your challenges, instead you must challenge your limits