Is that not a problem? According to an earlier post (no pun intended!) the purple paint must be “placed so that the bottom of the mark is not less than 3 feet from the ground or more than 5 feet from the ground.“ so if it goes right down to the ground it's not compliant.
Probably not serious, but you wouldn't want an issue on a technicality.
tl;dr: Posts painted entirely purple are more than is required.
Texas Penal Code § 30.05. Criminal Trespass
Sec 2 (D) the placement of identifying purple paint marks on trees or posts on the property, provided that the marks are:
(i) vertical lines of not less than eight inches in length and not less than one inch in width;
(ii) placed so that the bottom of the mark is not less than three feet from the ground or more than five feet from the ground; and
(iii) placed at locations that are readily visible to any person approaching the property and no more than:
(a) 100 feet apart on forest land; or
(b) 1,000 feet apart on land other than forest land; or
(E) the visible presence on the property of a crop grown for human consumption that is under cultivation, in the process of being harvested, or marketable if harvested at the time of entry.
About these purple "no trespassing" markings, can't this be used by someone to get away with murder? You drag someone inside the fence, you shoot him dead, and then claim he was trespassing and did not respond to verbal warnings and warning shots. How would the authorities in the relevant USA territories deal with this?
I don't want to come across as overly-clever or anything, but cleaning up that biological evidence alone, after having committing a crime like that, is not likely to work out in your favor.
You have to admire Texas. No messing or you get shot. That's Hardcore but at least you know where you stand