Purple paint has no legal use for posting property in TN.
To avoid a legal defense against the charge of trespassing, signs must be posted at all major points of ingress into the property.
To post the property for hunting by written permission only, follow the requirements in TCA 70-4-106:
(b) (1) (A) Notwithstanding subsection (a), it is unlawful for any person to hunt, take, chase, trap or kill any game as defined in ง 70-1-101 upon lands posted with signs approved by the wildlife resources agency bearing the language "Hunting By Written Permission Only" and bearing the name of the landowner or the person in possession or control of such lands, without having first obtained the written permission of or being accompanied by the landowner or the person in possession or control of such lands and having authority from the owner to give such permission. Every person who hunts, takes, chases, traps or kills any game on such lands shall have such written permission in immediate possession at all times and shall display the same upon demand of an officer of the wildlife resources agency, sheriff or other peace officer charged with the enforcement of the laws of this state. Written permission shall not be required of the landowner, the landowner's dependents, the person in possession or control of such lands, or the dependents of the person in possession or control of such lands.
(B) The signs posted pursuant to this subsection (b) must be posted by either of the following methods:
(i) The signs must be visible at all major points of ingress of the lands being posted, in such manner that the signs are reasonably likely to come to the attention of intruders; or
(ii) The signs must be visible at all major points of ingress and must be accompanied by fluorescent visual markings, which markings must also be placed at fifty-yard (50 yd) intervals around the perimeter of the lands being posted. Such fluorescent visual markings must be at least one inch (1'') wide and four inches (4'') long. The division of forestry, in cooperation with the department of agriculture and the wildlife resources agency, shall determine a unique universal paint color or colors, including the color blue, to be used for these property boundary markings.
(C) Any person who posts signs pursuant to this subsection (b) without authorization from the landowner is subject to the penalties imposed by subdivision (b)(2).
(2) (A) A violation of this subsection (b) is a Class C misdemeanor. Upon conviction for any violation of this subsection (b), the court may revoke the license of the person convicted. Any license so revoked shall be surrendered to the court.
(B) This subsection (b) is enforceable and may be prosecuted by all officers of the wildlife resources agency, sheriffs and other peace officers charged with the enforcement of the laws of this state.
(C) An affidavit from the landowner or the person in possession or control of such lands stating that the property on which the violation occurred was properly posted in accordance with this section shall create an inference that such lands were properly posted.
HISTORY: Acts 1951, ch. 115, ง 51 (Williams, ง 5178.80); T.C.A. (orig. ed.), ง 51-407; Acts 1988, ch. 542, งง 1, 2; 1989, ch. 569, งง 1, 2; 1989, ch. 591, ง 113; 1995, ch. 145, ง 1; 2004, ch. 748, ง 1; 2010, ch. 1143, ง 1.
But, before you go to the trouble of going the 70-4-106 route, be aware that posting like that does little to help in the prosecution for hunting without permission.