Red Tiger Lotus not only grow in lower light but have better red color in lower light. The brighter/higher the light they become lighter and lighter pink and pale green kind of blended together. That is how mine is now. When it was little it was a nice rich darker pink (never red) but it was shaded then. As it grew closer to the light it became lighter and lighter and then the pale green started. The pale pink and green are kind of blended on the leaves, gives them an interesting look up close.
Just because roots are going on one side doesn't necessarily mean the leaves will come out the other. My bulb came already sprouted and both the roots and leaves were really close together. I laid the root side on top the substrate and then let the leaves turn and start growing towards the light. Also the roots will go into the substrate and root so the bulb will be held in place. I never bury my bulbs as there is a chance they can root.