Hi there!
I prefer yellow sponges over any other color mainly because of to things:
1. It's not as easy to flash with them because they're matching my skin color better than red or
green (for instance).
2. Because of their appearance to the audience. Yellow is the most
common color for any type of sponge tool in their everyday life. And also, yellow is brighter than
red or green. The brighter something are the more light does it reflect. I've learned that in my
science class. ;P
If you pick this up I can also recommend you to buy SPONGE by Jay
Noblezada.
I hope you enjoyed the review, thanks! :)