Fathom and Lemon Peel are fairly close. I can look at my Jawbone, and Fast Jacket later, but they are both glossy solid colors. The Fathom has a little green to it almost like it's neon. I feel like it's the same as Retina Burn.  
 
Keep in mind these weren't white balanced 
Fathom 
 
 
 
 
 
Lemon Peel 
 
 
 
 
 
Retina Burn 
 
 
 
Neon Yellow 
