I have a tv branded as "Kalley" (it's a colombian electronics brand but the manufaturer is a non-disclosed chinese company as I came to find out recently). when looking to associate my new chromecast with google tv remote control with the tv i couldn't find the brand "Kalley" listed as supported device so this is what I did:
I lookup the tv's control remote model/reference online, and it showed up as being tied ti TCL. luckly TCL was in fact listed as a supported brand within the chromecast's tv brands, and after selecting that brand I was able to control my kalley tv with the chromecast's remote.
I did the same thing with another tv which brand was in fact listed but after trying all codes didn't work and with the tv's remote reference looked up online in google I tried a different brand which got my chromecast remote working with the tv. Needles to say.. I'm happy. how this helps someone else.