I seem to be the only one who likes the new Firefox logo. It’s way more colorful!
The new logo looks sleek and nice, but I personally just really like more complex logos.
I like it too, the old one was too detailed which makes it stand out too much. Icons need to work in a lot of contexts so simpler is almost always better.
The old one was great – in the context of late 00s to early 2010s design philosophy. It fit right in with Apple‘s skeumorphic design language and Microsofts Aero design. The new one is the perfect answer to the modern, more minimalist design. (Although I’m glad we’re mostly out of the "flat“ design era of Windows Metro and similar UIs)