Some people like LCD monitors with LED backlight because it is thinner and lighter than traditional CCFL (florescent) backlight. It also uses less electricity and produces less heat. They are all edge lit (at least the ones geared towards the general consumer) which means there may be case where could more backlight bleed along the edges compared to a LCD monitor with CCFL backlight.
In terms of which of the two monitors are better, they both look similar based on the specs. Therefore, the performance should be similar.
By "better in color" are you referring to color accuracy or are you looking for vibrant colors? They are not one and the same. Color accuracy on a TN panel monitor is somewhat difficult to get because TN panels can only truly create 256K color and then uses dithering to blend those colors into about 16m colors. If you are referring to vibrant colors where the colors pops out at you, then you may want to look for a monitor with a glossy screen. Glossy screens are highly reflective though (like a mirror).
Also some LCD monitors with LED backlight may have slightly bluish color that some people may notice, while others won't. This is due to the fact that all LED (a.k.a WLED) backlights are blue LEDs with a yellow phosphorous coating to imitate white. Sometime the imitation is not so good which results in the slightly bluish colors.