colour balance for mosaics MicaSense camera

[Perry2009]

I'm attempting to create a mosaic from individual (5 band) images from a Micasense RedEdge M.  The band to band co-registration is quite good, and the overall orthomosaic looks relatively free of artifacts. However, the image to image colour matching is horrible (I've attached a small example).

I'm assuming that the standard work flow includes lens distortion correction. I've tried to colour balance the images, and that has not helped. The attached example is from a mosaic following the colour calibration.
 
Is anyone else struggling with this?

[Alexey Pasumansky]

Hello Perry2009,

Does this picture represent the RGB bands? Have use used the reflectance calibration operation (applied to the original images)?