Its not always a big change being needed, simplification can also make a big difference.
Mozilla unveils a new simplified logo for 2013 which is not much different compared to its 2009-2013 logo—however, Mozilla designer Sean Martell backs this up by saying that it’s “not a logo redesign, but a simplification in form and function.”
“It’s been optimized to be crisper and cleaner on small screens and lower resolution devices,” Mozilla developer John Slater said in a blog post.

  • In a six-step breakdown, Martell pointed out the changes in the logo:
  • Details using blend-mode layering, mostly found in the tail area, were rid of.
  • The logo was reduced to its shape-tweaked forms and softer gradients
  • Continents on the globe were recreated
  • Glossiness of the logo was removed to create a softer, deeper color of the globe
  • The fox’s fur was given lighter oranges in softer detail
  • The arm of the fox extends to from a shoulder instead of from behind his chest

firefoxold firefox1
via seanmartell.com  http://blog.seanmartell.com/2013/06/27/rebuilding-a-simplified-firefox-logo/