There are white fire alarm notification appliances (i.e. horns, horn-strobes, remote strobes, chime-strobes, and speaker-strobes), but no white pull stations. I don't see what would be wrong with a white Fire-Lite BG-12/Notifier NBG-12 with red lettering, or a white Simplex 2099 with a red T-handle.
The powder is only refined baking soda and quite harmless, just take the heater outside and blow out the powder and it'll be fine.
Safety goggles and eyedropper
