You're at kind of an awkward price point where it is tough to decide whether you want a low-end IPS panel or a high end TN panel. (IPS offers superior color and view angle, TN offers faster response times and less motion blur).
Since you asked specifially for nice colors take a look at the LG listed below. It has a 5ms response time which isn't bad (you won't notice ghosting unless you're really looking for it), and a nice complement of IO ports and features. http://www.amazon.com/LG-IPS236V-1080p-Widescreen-Monitor/dp/B004SUDU9Q