I completely disagree with the above.
For something as small as changing a few small coloured panels there would be no come back as it would make zero difference to performance etc.
Its not about performance !
If you want to be assured that your claim will be met every detail on your policy has to be correct. You have to tell them about the colour!
Years ago, this was all a "grey area" and modifications were pretty much irrelevant. These days, ( don't you just love it ) Insurers will use any tiny loophole to avoid paying.
I know a guy, whose bike was stolen. The insurer was uninterested in paying out because they claimed a similar colour change made the bike more attractive to theft. Sounds ridiculous. Why would you ever leave anything to chance? Make sure every detail, every date is correct.
Be meticulous.