This post includes dupe and comparison swatches for select colors from MAC’s Heavenly Creature Collection.
Laura Geller’s Blush N Brighten products have a similar formula and color marbling to the MSFs in this collection. Some of the swatches are for colors that are very similar and others are of colors in the same family, though they won’t be “dupes.”
There are plenty of colors out there that are similar but aren’t shown below, so if you have a color in mind that I don’t mention, run an image search for it. There are also tons of other people out there who do comparison swatches, so I encourage you to hunt around.