At these time we have sampled colored lens, and in general rejected them in this application.
The combination of the "just right" shape, with the "just right" brightness, would only suit this specific purpose.
So, it can be made, but not a priority, because in this bullet shape, Id likely need to do a minimum of 5000 pieces, and would take years to even consider a break even.
But I do think there is a solution, I think worth trying. Our Fluted bullets are the right size and shape, and very bright twin 2835. I am confident it is the brightest bulb you could "paint" with some type of color.
At $.69...its not a gamble of much. If they show out of stock, Tuesday, they should refill.