I’m Stéphane, senior product designer at Stack Exchange. First, I wanted to congratulate you because this site is now starting the process of moving out of beta to become a fully-graduated site! Well done!
Graduation and Your Site Design
Graduation comes with a few perks. I have already begun work on your site's design, which will give you your own unique theme that reflects your topic and culture. This will help brand your site as unique, even while you share common elements with other sites that show you are part of a bigger Stack Exchange family.
Once the design goes up, you will receive a link in the footer of other sites in the network, along with the ability to migrate content to and from other sites — and the notoriety of a public launch that says, "Congratulations, you finally made it!"
Design Concept
For our academia.se community's site design and branding, I wanted to have a "campus life" feel. I think it's most effectively conveyed with a hand-drawn illustration style. It has a personal and lively feel to it. I've gathered some artwork I found online for setting up a mood board.
Mood Board
Color scheme
This color scheme reminds me of autumn. It's warm and inviting. Fall is also when a new academic year starts. All the pastel colors bring calm and harmony and they are lighted up by the green and the red. This way we can balance our design from calmness to more contrasted and focused area.
Logo
All the knowledge has always been passed on by books through the years, they are the origins of teaching. The idea was to evoke some books in a bookcase but in a non figurative way.
I believe this modernized logo works in other mediums to promote our site as well.
Swag
Business cards / stickers / t-shirt
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Overall site design
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Main illustration
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I believe the design captures the mood I was going for. I'd love to hear your feedback. If there are no major design changes, we're hoping to launch the site soon. Thank you for being an awesome community!
Edit:
Thank you for your valued feedback! I've changed the badges based on your answers and comments. They now are mortarboards.
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Regarding the question list, I will tweak some vertical space and font size during the coding to have the most perfect rendering across browsers.