Don't think too much about the ergonomics of the layout, it's a "mimic panel" or "mnemonic panel", representing the arrangement of the individual control rods.
Ofc I can't confirm this photo is really from Chernobyl and the time of taking the shot is also questionable as you'll see.
So at the time of the accident, three different colors marked the function of the channels on the display panel:
White lamps: fuel channels
Yellow lamps: fuel channels with power density probes
Green lamps: control rod channels
Red colored indicators were introduced for indicating the state of fast scram rods after the Chernobyl accident. (source)
Since there are a lot of red "light covers" in the photo, it was probably taken later? I'm not an expert in this field.
As pointed out in the thread, the "ВЫВЕДЕНО ИЗ ЭКСПЛУАТАЦИИ" ("not in service") stickers in the background may make you uneasy in this context.
And here is a great story on one of the keycaps / light covers. Check out the video:
More info at ORAU Museum of Radiation and Radioactivity: