I agree with the suggestions by @cpixip and @Manuel_Angel to use the camera exposure change approach. I explored the option for changing the light intensity, and the implementation is not as simple as the option to change camera exposure.
@Manuel_Angel, from experimenting with White LEDs, it is possible to control the intensity (example implementation in this post). The results of the experiment do not show a significant change in the white balance (light spectra) at the range appropriate to the camera used, note this video of the implementation with a DSLR D3200.
The best of both worlds may be a tap approach to increase light intensity for capturing the ultra-dark portions of the scene. That can be done by turning on/off an extra LED set without the complications of intensity control.