Random Color Light Gradual

I’ve followed instructions here to change a color light randomly, but what I want to achieve is to generate transitions between given colors, right now the light color ‘jumps’ form one color to the next, instead of gradually change the color, so if the light changes from red to yellow it must be ‘orange shades’ before yellow.

This is my Blueprint ‘attached’ to a Point Light.

Well this is weird but I want to answer my own Question, here is the right blueprint, I already did it succesfully.