it appears the spectrum changes as the color does That happens with any light. The colour of light is defined by the part of the light spectrum it falls on. Don't stress it too much though. Any half decent grow light from a semi-reputable company nowadays will be good enough for your purposes. More on reddit.com

Hey, architectural lighting designer here. You have some good lighting questions here so hopefully I can clear some things up for you. First of all any light that emits white light can be considered full spectrum. If you look at the spectrum of color temperatures for white light sources, you'll see that white light can have more blue in it (cooler) or more red in it (warmer). The ones you're looking at are tuned to a rather cool 5000K color temperature, meaning more blue light but all the other colors are still present. Why is that useful? Well humans react differently to those different color temperatures. Warmer color temperatures feel cozy and warm while cooler color temperatures can feel harsh and utilitarian. Apart from how these color temperatures feel to us, they also correspond to light from the sun that reaches Earth at different points throughout the day. When I was getting my masters in lighting design, the professors and designers emphasized how light effects human circadian rhythm. Circadian rhythm in all living things on Earth is based in the 24 hour light/dark cycle. Besides the day(light) and night(dark) portions of the cycle, the white light of the sun that reaches the Earth changes color temperature based on the sun's position relative to an observer. The sunlight at sunrise and sunset is much warmer than the sunlight at midday which is usually very cool on the CCT scale. In that sense, cooler color temperatures are more akin to daytime while warmer temperatures are more similar to the morning and evening. This is a main reason why higher color temperature light sources are marketed as increasing working efficiency, because our brains are hardwired to do work in the daytime when the sunlight is a very cool color temperature. From my own experience, I very much appreciate the cooler temperature light for while I'm working. It reminds me that there is still day light left and work to be done. I personally use and regularly specify 4000K light fixtures in office and industrial architecture projects. I typically don't go higher than 4000K but I will say that when it comes to designing spaces, the person who occupies the space the most is always right. There is a lot of preference involved too. I would also say don't buy grow lights for your working space. The main difference between grow bulbs and regular bulbs is the amount of light that they give out. Grow lights supply way more light than is needed for human tasks so you'll likely end up using more energy/money with that kind of a solution. More on reddit.com

I have used LEDs ranging from 3000k to 6000k with good effects, everything from 10-18w bulbs to T5 LED shop lights. Intensity will differ, as will color and light diffusion. A light meter app or an inexpensive dedicated light meter can be very helpful as different bulbs can offer vastly different light intensities to the plants and you may be surprised to discover how very quickly intensity drops off with even a little bit of added distance. Some bulbs have filters that disperse the light while others are quite concentrated which will also greatly effect intensity at leaf level. More on reddit.com

"Full spectrum" is a very vague term bordering on marketing nonsense. However, it's really referring to CRI (color rendering index) rather than CCT (color temperature). An incandescent lamp, for example, has 100 (perfect) CRI and a "full spectrum" but usually has a temperature of 2500-3000 Kelvin. On the other hand, there are plenty of "daylight" bulbs with relatively low CRI, or incomplete "spectrum" to put it another way. More on reddit.com