Yes - this is different to the original Wikispaces.

Click here to see what Wikispaces Classroom can offer: Wikispaces Classroom

Wikispaces Classroom is a social writing platform for education. We make it incredibly easy to create a classroom workspace where you and your students can communicate and work on writing projects alone or in teams. Rich assessment tools give you the power to measure student contribution and engagement in real-time. Wikispaces Classroom works great on modern browsers, tablets, and phones.
Wikispaces Classroom is free for teachers and students. We have over 10 million registered teachers and students on the platform.

When you register for a new wiki or wikispace account, your space will default to Wikispace Classroom. If you want to change it to a normal wikispace, follow this path:

Settings>general>application type>wiki

Your wiki will then convert to a normal wikispace - from there you can change the theme and colours from the settings menu.