as there is not much left in the way of archival material for Dutch colonial troops, I can't help you much. But a painting by P. Groenia (who himself served in the Batavian army, and ended up commanding the French 75eme Regiment d'Infanterie de Ligne in 1815) of 1805 shows a Jager of the 5th Colonial Jager battalion, which, together with the 6th, 7th and 8th Jager batallions was destined for service in the West Indies and Surinam. The Jager in the painting wears a shako: http://www.geheugenvannederland.nl/?/nl/items/LEMU01:00012865/&p=1&i=5&t=6&st=groenia&sc=%28groenia%29/&wst=groenia (if link doesn't work, please go to www.geheugenvannederland.nl and search for Groenia, you'll find the painting).
This text (in Dutch) also mentions that bicornes were worn by Officers of these battalions, as found in prints of J.A. van Langendijk: http://collectie.legermuseum.nl/sites/strategion/contents/i004543/arma09%20de%20uniformen%20van%20bataafsche.pdf
Hope this helps,