ALL the lights are 14000k? I think that it may limit your options. Between 5,000 and 7,000k is ideal for freshwater plants.Lighting 4 x 54w t5(2 marine white, 1 marine blue, 1 tropical pink all around 14000k
Thanks in advance
Once the lighting is determined to be OK you can get some reds in there, I have a dwarf lily that has some red (picture attached), started with a red ludwigia (it was actually some African plant but I've forgotten the name). You need fairly high light levels to sustain any colours as they tend to go green in the new growth otherwise. Something about needing more chlorophyll, and it being the green colouring, in order to provide more photosynthesis.
It's usually the fish that provide the colours though, I'd just consider that it is supposed to be green.