What's your definition of "AMAZING" color for leaves? It could be that you're good to go, as you say.
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That would be splendid.
You may be able to help train it without increasing the light. If the light is coming from a window, or a directional source on the side, you can rotate the plant so that it grows towards that light, and help it into a shape more like what you want. Does that make sense? It would be a good supplemental help, in any case. Wouldn't hurt to try.
It's the same technique that growers use to make that spiraly bamboo. (or one way, at least)