Its last colour was presented to the regiment in Linköping by His Majesty the King Gustaf VI Adolf on 25 September 1964. It was used as regimental colour by I 4/Fo 41 until 1 January 1998. The colour is drawn by Brita Grep and embroidered by hand in insertion technique by the company Libraria. Blazon: "On white cloth in the centre the Royal Swedish coat of arms as to the law without mantle. Below the cross of the Order of the Seraphim, an erect white sword. In each corner a blazing grenade - white in the first and fourth corner (a legacy from the former Royal First Life Grenadier Regiment, I 4) and red in the second and third corner (a legacy from the former Royal Second Life Grenadier Regiment, I 5). Battle honours (Varberg 1565, Breitenfeld 1631, Lützen 1632, Wittstock 1636, Leipzig 1642, Warszawa 1656, Fredriksodde 1657, Tåget över Bält 1658, Lund 1676, Rügen 1678, Kliszow 1702, Warszawa 1705, Holovczyn 1708, Malatitze 1708, Rajovka (1708, Helsingborg 1710, Gadebusch 1712, Valkeala 1790, Svensksund 1790) in yellow horizontally placed around the coat of arms."