I noticed on my way back home last night that the PWR, 2, and 4 buttons were not illuminated on my stock radio. The CD player has died on me long ago, but are there separate bulbs for each indicator on the radio?

 

Yes there are seperate bulbs, but the only way to replace them is to solder in new bulbs (or LEDs if you choose). But since you're CD player has also stopped working, maybe its time to invest in a new headunit (stock replacement or aftermarket).

If you are interested, here is a thread about replacing burnt out headunit bulbs with LEDs:
https://ls1tech.com/forums/wiring-stereo-electronics/113734-ya-think-i-m-gonna-buy-head-unit-when-i-did.html