How to make natural indicators
Things You'll Need
5000K full spectrum bluorescent bulb
What Bulbs to Buy
Determine which side of the kelvin scale the fluorescent lamps you already have fall on so you can purchase the correct bulb. If you have 3000K or warm white bulbs you add a 6500K bulb. If you have 6500K, get a 3000K or warm white bulb.
Purchase the correct bulb. The color temperature of the bulb will be printed on the package. It does not have to be exactly 3000K or 6500K, but look for key words like warm white, warm and 2700K as indicators for 3000K bulbs. 6500K bulbs usually have key words like daylight, cool, and cool white.
Remove one of the old bulbs from the fixture and set it aside in a safe place. Take care not to drop fluorescent bulbs.
Install the new bulb into the
fixture. This works best if the light fixture has a diffuser, which mixes the light to make the light more natural.
One-Bulb fixtures or fixtures without diffusers
Purchase a special fluorescent fixture that is specifically designed to match natural sunlight. Natural sunlight is about 5000K, which is less blue than a 5000K bulb.
Remove the old bulb and install the new one. The 5000K bulb will provide a natural daylight color. These bulbs are very high quality fluorescent lights and make reading easier and also reproduce colors more correctly. This bulb may be hard to find.
If you can't find a 5000K bulb, buy a bulb that matches the paint in the room where the light fixture is mounted. Paint colors with a red tint will be naturally accented by 3000K bulbs and colors with a blue tint will be accented by 6500K bulbs.Source: ehow.com