I know it's hard to see the little covers! I'm sorry. Below I've listed the books starting at the top left corner and going left to right, top to bottom.
Starting with the top row, and going left to right:
Al Capone Does My Homework by Gennifer Choldenko has a green cover.
Trans-Siberian Express by Warren Adler is historical.
Guy in Real Life by Steve Brezenoff has a romance.
Stitching Snow by R.C. Lewis has "ice," "snow," or "frost" in the title.
Daring by Elliott James has a creature (a werewolf!) on the cover.
Orphan Train by Christina Baker Kline has a Native American MC.
Hunt for Jade Dragon by Richard Paul Evans has a red cover.
Watch Out, Hollywood! More Confessions of a So-Called Middle Child by Maria T. Lennon is set on Halloween.
I Work at a Public Library by Gina Sheridan has a black cover.
Al Capone Shines My Shoes by Gennifer Choldenko is a mystery.
Letters From Father Christmas by J.R.R. Tolkien is set at Christmastime.
The Witches of Echo Park by Amber Benson has witches.
Just Like Fate by Cat Patrick with Suzanne Young is set in autumn.
The Martian by Andy Weir has an orange cover.
A Thousand Pieces of You by Claudia Gray had a fall or winter release.
This has been fun! I wonder if Great Imaginations will do a spring Bookish Bingo? Or a coworker gave me an ultimate 2015 bookish checklist. Are any of you doing any fun checklists/bingos in the spring? Let me know! I haven't decided yet what I'll do.