Sorry for the late reply. I just found this. Apparently the normal email notification got lost.
I used colored bulbs, I did check out clear in a red tail light and it looked pink.
I did not use resistors on the RT. two reasons, one I don't have a problem with hyper flash, I think it gets attention faster. Two, if a LED bulb fails, hyper flash won't activate unless the resistor fails also. So no advantage to me.
On one vehicle I had to use resistors because it had sequential flash on the rear.
As for brands, the brightest with good differential between low and high output were from: https://www.ebay.com/itm/6PCS-White-...ss!84067!US!-1
However there have been many changes over even the last year.
I did a lot research, attached is a list of most LEDs used with their output. Multiply by the number of LEDs on the bulb for a good idea of total output.
Colored reduces output somewhat.
Specifications for LEDs, Halogen and incandescent bulbs used in automotive applications.
General rule, incandescent give 15 lumens per watt, Halogen 16.
3157 Incandescent on high 402 to 460 lumens
921 “ 320 lumens
7440 “ 320 “
3156 Halogen 50 watt 800 lumens
3157 w/92 1210 leds, 552 to 736 lumens
Cree XR-E Q5 107 lumens
Cree XP-G R5 260 lumens
1210 6-8 lumens
2323 46 lumens
2538 63 lumens
2835 22 lumens
3020 15 lumens
3528 8 lumens
3535 32 lumens
5050 15 lumens
5630 32 lumens
5730 50-60 lumens