More small inexpensive fish suggestions if you like - the neons are great under LED, good choice!
Cherry barbs also make a really nice display, very vibrant red against plants. nice and active, the males love to display - besides chasing each other and the females mine will swim forward and quick stop with all their fins spread out like 'airbrakes'
Rosy barbs are bigger bodied, very active. If you get the standard fin, metallic scaled kind the are really reflective and golden copper - but really stand out with the LED's reflecting off of them. The long finned variety are pretty but seems to have smaller scales - less reflective, just 'shiny'.