"1806-07 French white uniforms question" Topic

One for the uniform experts:

When the white uniform was introduced for some French infantry regiments, did the shako come with it, or did some white-clad units still wear the bicorne?

I have seen sketches of the white uniform with bicorne, but I don't know whether that was planning or shortages. For that matter, I've seen a letter from a French general in Spain c. 1810 bragging that hr'd finally gotten rid of all the white coats and bicornes. But note that this does not directly state that the same soldiers were wearing both.

I don't think most of us appreciate the price and scarcity of clothing as late as the Napoleonic Wars.

As stated by Jouineau:

In 1806, Emperor Napoleon, facing indigo shortage because of the British naval blockade, remembered that pre-revolution French infantry was wearing white. He decided, as a trial, to dress some regiment companies in white, but with the distinctive colours following the 1806 regulations. The application was very random as there were lots of differences between white uniforms. The white uniform was officially dropped in 1807, but survived until 1812 as with the 15th line infantry in Spain.

images gathered on a Google search (maybe not free of use?):

Based on Jouineau's infographics I believe that the shako was being introduced at the time of the trials, and therefore some white units may still have worn the bicorne.

Very helpful responses. Thank you very much.

Could these double as Italians or other allies?