Experience proves it to me every day that in the very near future, the real connoisseurs will no longer tolerate and thrive in ambiances with lights that distort colours in their immediate surroundings.
More and more, avoiding the "yellowing effect" of halogen lights and their damaging colour rendering, will be a prerequisite for any authentic management of space.
Light Emitting Diodes show "true colours" and are not to be mixed with halogen or other incandescent lights of any sort.
If you care for your interiors, trust me, don't mix the two types of lighting and even better, eliminate halogen lights radically! Aliki Polydor 2009