The circuit is designed to drive at least a #44 bulb that draws 250ma.

The resistor will draw about 13 ma (I = V/R, 6/470). If you use a #47 instead, this only draws 150ma, so you would be well under 250ma total (150+13=163ma) using a #47 and leaving the resistor installed.

If you want to use a #44 though, you'd need to look up the current capability of the SCR on the Fireball Classic lamp driver board, and see if it can safely provide 263ma.

EDIT: I looked up the 2N5060 SCR, and it is rated for 800 ma max, so should be OK to leave the resistors mounted, even when using #44 lamps.

I used to too, but the cointaker warm whites are not too bad. They're like a tiny little, warm fluorescent light. I like to use them in weird places that you never want to have to get to again. Used sparingly, I like them in some places. They look pretty decent in space-themed scenes.

The cool whites are just too blue for most applications.