I don't think the HSV data is useful. Mostly, I doubt it's common for someone to need the exact color being used (capturing the color via a screenshot is also prone to error, thanks to gamma adjustments you can apply from within the game). If someone did need the exact color value, I think RGB would be more helpful: it's more commonly understood, more commonly seen (for example, HTML and CSS use hex-encoded RGB, not HSV, though CSS3 is supposed to have HSL support), and any program you could enter HSV coordinates into, you would also be able to use RGB (and many where you can use RGB, you can't use HSV).