Observe direction of sunlight at your location as it can affect the how lights shed in your space. Example, you might get a lot of lights in one wall but not as much lights in opposite wall at the same space due to the direction of lights comes from. This is important as lights may affect how your plaster colour looks on a wall and your colour options.
Also, how much lights and when you get lights each day is pretty much depending on your location. For example, if you’re living in a north facing room, you get very limited lights. South facing rooms, however get sunlights the entire day. For those living in West facing rooms, they don’t get much morning light. On the contrary, east facing rooms have the opposite experience of west facing rooms.
This is the reason why artificial lights are important. Artificial lights come in to play during those hours when your room isn’t getting much natural
lights. By using the right artificial lighting, you can enhance the wall textures at any time of day, regardless of natural light exposure.