Good to know. My father in law has some extra bulbs I can use until the ones I ordered come in(didn't know he had them when I ordered). So I may play around with the dye, sharpie, and he even mentioned red model paint until my caps come in. In looking at snyper2099's maze board pic above, I see yellow caps on there as well. None of my existing lights have yellow caps.
Were the yellow caps how it originally came or is that a modification? And is it necessary/good to have them? I also see various cap sizes. Most bulbs say 5.8mm so would you recommend the 6mm or do you need the 5mm caps and they stretch?