I would suggest some cree warm white leds.. cheap and bright
color would be warm white.. because rgb only brings pain to configure Can have ambient light regulation, but also allow manual change
RGB is not a pain to configure, especially if it is all controlled by open source and easily modifiable firmware.
I use redshift that adjusts my screen's colours (appears more red at night and white at day) based on time of day and I enjoy it. It would be great if everything else that emits light could also change accordingly.