I don't have much info on that. On the one piece Titlist, I've just seen a green decal with the old Brunswick logo in writing at the top and a large "Titlist Cue" in block letters.
On the Hoppe Professional 2 piece, I think the light blue label was used in the 1960's, then it was replaced with the large block "B" logo and a white and green label in the 1970's. i rember there was another color on the oldest Hoppe Professionals, which had an ivory ring on the butt sleeve, i can't remember if it was red, green, or gold.