Here are some comparisons I swatched for Burberry Summer Showers Lip Glow Balms and Nail Polishes. First for the nail polishes, Burberry Summer Showers colors are Orange Poppy No. 221, Pink Peony No. 222 and Pink Azalea No. 223 (swatches and original post here):
Chanel Coup de Couer (review here)
Dior Red Dahlia (discontinued)
Chanel April (swatched here)
Dior Mirage 338 (gel shines swatched here)
Chanel Rose Insolent (discontinued)
YSL Rose Baby Doll (swatched here)
Dior Wonderland 575 (swatches here)
Tom Ford Indiscretion (limited-edition, review here)
Tom Ford Coral Beach (discontinued, swatched here)
Chanel Tutti Frutti (swatches here)
Chanel Starlet (swatched here)
Tom Ford Ginger Fire (feature here)
_____________________________
For the lip glow balms, there are coordinating colors for the nails/lips and cheeks, colors for Summer Showers are Orange Poppy No. 01, Pink Peony No. 02 and Pink Azalea No. 03:
Tom Ford Insidious Lip Color Shine (swatched on lips here)
Tom Ford Paradiso Lip Color Sheer (swatched here)
Hope this helps with your purchasing decisions! You may have similar colors or dupes in your stash.