[No Bug] Rune effect not overwritten by new rune

[Steveleeb 1070]

[21:40:37] A jacket made from finest drake hide with brass husks. Colors: R=46, G=177, B=55. It could be improved with a leather.
The green tint was from a Rune (adamantine rune of Jackal)  

I replaced it with;
[21:40:37] A single brass rune of Jackal has been attached to it, so it will have a decent glow

It glows green, upon examine R=46, G=177, B=55 is returned.
considering the adamantine rune is what made it green and the adamantine rune is no longer applied, shouldn't it have defaulted back to R10G10B10 ? 

I asked in CAhelp, i was asked to make a report here. 
thank you
 

[Retrograde 12014]

The colour changing rune is a single use rune, meaning it applies its effect and then disappears. So what this means is it changes the colour, and another rune can be attached. Placing another rune won't change the colour back as it does not rely on a rune being on it for the colour

 

(you'll notice no message about the rune in the first examine)

 

This isn't a bug, just how the colour rune works.