Olympic Blue is one of Kraze FX's three shades of non staining blue that is more towards warm shade of blue, not strong blue like royal blue shades. Special non staining formula washes off completely leaving no stain at all, with just soap and water.
Dome Strokes are a Kraze FX exclusive, where the center of the cake is raised. Domed design helps with the problem that many face painters face, where split cakes in general tends to get watery puddles in the center that wears the center out faster and causes mixing of colors. In domed design, excess water will accumulate to the sides which can be removed by just flipping the cake.