So, I got an RGB under the free saber give-away deal. Actually got it for a friend, but I've had ample opportunity to play with it and check to make sure it's working. A lot. LOL.
Anyhow, I've noticed that there's an odd difference between the arctic blue on the RGB (they added this in place of SRD as a nice little bonus) and the arctic blue on the Prophecy I bought back when the color first came out. The Prophecy AB looks a little more like my SRD, it has a slight greenish tint to it. The Arctic Blue on my RGB looks BRILLIANT. It's a very nice, pure, bright sky blue. I've replaced the batteries in my Prophecy and everything and I just can't get it to look that nice. I wonder what the deal is? I'll post pics when I can get them uploaded.
One thing to keep in mind is that the resistors used are not exact values. A typical carbon resistor has a 5% tolerance. So a 100 ohm resistor could have an actual value range from 95 to 105 ohms. This kind of difference in value can result is a difference in color. Particularly for colors that are blue or close to blue. The human eye is can be more sensitive to blue colors under some conditions. The same thing can make blue-ish lights seem brighter then red ones, even when they are the same lumen output.
How much additional strain do the resistors put on the battery? The battery pack is still pushing current and the resistors are....resisting, does that drag the battery down even further as it's already running multiple LEDs?
Resistors do not put any "strain" on the battery. What they do in this case is limit, resist, the maximum flow of current through the circuit. If you don't have one most LED's will burn out because they will try to draw an unlimited amount of current. The more current you have flowing, the more heat you generate, and this heat can quickly destroy the LED.
