I wanted to try it on a white base and chose Maybelline Colorama Marshmallow for that, two coats. Over that I applied two coats of Dreamy. It went on smoothly, without any issues at all. I think the result is really nice although I think I will choose a creamy white next time. The pearly shimmer in Marshmallow seems to dim the holo effect a bit. I tried Dreamy also on a dark, creamy polish and the holo effect was very strong on that.
The shimmer of Dreamy shifts from a grey tone, to pale blue, to pink, to lilac. I think it would be very pretty to stamp with a light pastel color on this.
I thought I would not like this too much and was prepared to put it up for swap/sale after testing. Bought it anyway because the price was good. Now I think I will keep it, at least for a while. I think I will use it. :-)