Brownies are 7 and 8-year-old girls. Brownies aim to develop a sense of identity and a positive relationship with others by participating in a varied program of activities. Their uniforms used to be brown, then changed to orange and navy blue, and are now the uniform blue T-shirt with brown insets at the collar and sleeves. The Brownie program book is called "Brownies Can Do It!", and is divided into ten "keys". There are program requirements to complete each key, and a number of corresponding optional "interest badges". The keys are: Key to Brownies, Key to Me, Key to My Community, Key to I Can, Key to Active Living, Key to STEM (Science, Technology, Engineering, Math), Key to the Living World, Key to Camping, Key to the Arts, Key to Girl Guides.