When I started playing around 1980, Clarke whistles were only available in the key of C, with a softwood block which was prone to leaking, splintering and rotting.
That´s what they looked like: [img]
[IMG]https://s12.directupload.net/images/200808/temp/b6m4iqlc.jpg[/img][/img]
Note the black letters on golden shield and the golden diamonds on/around the finger holes.
Around 1990 the design was changed, the block was now made of hardwood (still leaking in most cases), now golden letters on black background for the name, and the golden diamonds between the finger holes: [img]
[IMG]https://s12.directupload.net/images/200808/temp/yb9up2km.jpg[/img][/img]
By the same time, whistles in the key of D were introduced, and also the pure 'silver' ones in both keys.
Also, the names "classic" and "original" came up (I could never keep in mind which was which), to be later completed with "victorian", "traditional" and, AFAIR, some more names for the same whistles...
If or if not you like them is very much a question of personal taste and preference, but it can be taken for granted that, with a bit of qualified tweaking, these whistles can perform a lot better than right out of the box (although back in the day, there was no box, they came individually wrapped in waxed paper).
But, to answer what I think was your initual question - the painted ones were there before the plain ones.