Your biggest thing to play with is your white balance on your camera. If it is not set correctly you could end up with a very warm or very cool temperature. You setting will depend on the type (color temperature) your light is. So, go to the manual setting on you camera and find your white balance, usually the symbol is WB.
Then, play with the different settings. The symbols are usually like a sun, a cloud, incandescent lightbulb, etc. Try each setting and see what you like best. :) Although, sometimes, the auto setting works best and sometimes it doesn't.
Also, www.picnik.com is my most favorite website. I literally upload my photos, resize them, then hit the "auto-fix" button and I'm done!
I made my light box, so let me know how it works out for you. (Maybe a blog post? ;)) Personally, making my light box was the best thing I've done for my shop. My photos look more professional and I can set it up without bursting into frustrated tears, lol.
Hope it all goes well for you!