You can add your favorite skins to the game and change them when you want. Just select the option "Change Theme" in the "Settings" menu and you will see a preview of each new graphic & background. Choose your favourite one to play with this set of new graphics & backgrounds.
Take a look of the first new SKINS for Bloobs
it's going to be a big HIT in PC!!.
TUTORIAL: Do your own SKINS!!
Some Bloobs players are designing new backgrounds and skins for Bloobs and you can download them for FREE here. All of them are original work from its own authors and have been designed for fun.