These are Wurttemberg grenadiers (one out of the two battalions per regiment had a company of grenadiers in the 1809 Wurttemberg OOB). They are painted up as belonging to the 1st Regiment (Von Phull). I have a source (well, uniform plates found on the net) which has only their cuffs and turnbacks in the regimental colors (yellow in this case), with the facings in the standard Wurttemberg dark blue. So that's how I painted them up.
The figures are Front Rank Miniatures.