Thanks for trying it out! The switches were all arranged on the 4 buildings in the top centre of the level. two of them were at the top on either side of the locked room with the chest inside and the other two were next to the obelisk in the centre. Essentially the colour combination for it is spread out in 2 spots. One set is near the safe zone at the start and the other set are in the graveyard. The order corresponds to the order the hints are displayed in sets of 2.
I really need to make a guide or at least a little hint book to help when people get stuck. The last thing I want is for people to get frustrated! Really glad you tried it out though! Thanks so much!
Edit: Also worth noting that the little sticks lying around everywhere restores your light. This helps so you don't have to go to the safe zone all the time. Also you missed all the audio. Maybe you had the volume too low? But my team mate was a sound designer so all the music and sound effects were done by him. Just like restoring the colour, you also build up the music loop with each pedestal that is unlocked.