Red uniforms - Grenadier Guards reasons for wearing red

[Tarbicus]

Interesting. You do realise the Grenadier Guards themselves say otherwise:

At this point Napoleon directed his final assault with fresh troops - the Imperial Guard, which had hitherto been maintained in reserve. That assault was utterly defeated, and, in honour of their defeat of the Grenadiers of the French Imperial Guard, the 1st Guards were made a Regiment of Grenadiers and given the title of "First or Grenadier Regiment of Foot Guards" which they bear to this day. The Grenade was adopted as a badge and the Bearskin Cap was worn after Waterloo.

http://www.army.mod.uk/grenadier/histor ... istory.htm