LEDs can do oranges/reds just fine, it is just that blues are cheaper for interesting historic reasons (and people just love blue). LEDs can do better reds than anything that used to be used for outdoor lighting and there's some hope that LED lighting could help red shift outdoor lighting, eventually. (The redder it is, the less it interferes with night vision the less overall light needs to be spilled to seem as bright.)

the counterpoint is that LEDs allow for much better distribution of light which can dramatically decrease the amount of light pointing up