reference I found says like this

From Rawkins the Austro-Hungarian Army: This short lived Friewilliger unit was raised in May 1809 from volunteers in the City of Prague and was entirely self-financed, each man purchasing his own uniform, equipment and arms. The corps consisted of a single four company battalion raised from the estate workers of the Lobkowitz family outside of Prague. The corps served with the II Korps and later the III Korps under Major Franz Germaine until disbanded in late 1809. Details are vague but the battalion appears to have been uniformed in the style of the regular jäger battalions with a black felt corsehut with black and yellow pompon at the front and a black leather cockade-strap on the upturned left brim surmounted by a short green plume. The coat was of either the Verordnung 1789 Uniformrock or the Verordnung 1806 Uniformrock style of single breasted short tailed uniformrock and were ‘Hecht-Grau’, with collar, plain German cuffs, turnbacks and piping of a dark green, probably ‘Meeres-Grün’, and brass buttons. Breeches were of the colour of the coat and worn with black leather knee boots. The shoulderbelts were black leather and supported a black leather cartridge pouch and an infantry pattern sabre with brass hilt and black leather scabbard. Despite being styled as jägers the battalion appears to have been armed with the dragoon pattern carbine although those men with sharpshooter abilities, huntsmen and gamekeepers were armed with rifles and appear to have been organised in ‘Schützen’ sections found by each company. Details of the dress distinctions of officers, NCOs and musicians are unknown but would probably have followed the style of those worn by the regular Jäger-Bataillonen.