1. A method of controlling a backlight module, comprising: receiving an image, wherein the image having a plurality of regions is displayed by a plurality of color backlights provided from a backlight module; analyzing a feature in a first region of the image and the feature in a second region of the image to obtain a spatial weight, wherein the first region and the second region is one of the regions and the second region is neighboring to the first region; analyzing the feature in the first region of the image and the feature in the corresponding first region of the previously received image to obtain a temporal weight; and adjusting one of the color backlights provided to the first region of the image according to the spatial weight and the temporal weight.