I was experimenting with color flow vs. royal icing and bottle vs. bag. I definately prefer to fill the cookies in with the thinned icing in a bottle. I thought the color flow was supposed to dry shiny, but I don't find a difference in appearance from the royal icing or color flow. I prefer outling with color flow but could't tell the difference in the filler. The glossy one is a cookie filler recipe from the wilton yearbook. I love it's glossyness..but definately takes 24 hours to dry,