SirHazza Whilst I think power users like myself would be okay with this, a system like this risks being too complex for your average user.
Then make it 4 colors instead of 5. Get rid of Distancing Historical Low, leaving it to look like this...
Blue - New Historical Low
Green - Matching Historical Low
Yellow - Near Historical Low
Red - New/Recent Release
I like the Near Historical Low a lot because it lets people know about deals they would not be significantly overpaying for and often times a game is at a Near Historical Low price instead of actually matching it. Especially games released many years ago and no longer hit their Historical Low that maybe occurred a decade ago. Introducing a Near Historical Low would give said game a much greater chance to be purchased and some recognition that it even exists.
To determine a Near Historical Low it could maybe be based on a percentage away from its Historical Low, say 5-20%.
The point is that while I browse SteamDB I always wish there was a Near Historical Low on there because outside of browsing all the Blue New Historical Lows and all the Green Matching Historical Lows, I'm then just viewing everything else.
With a Near Historical Low, it narrows the rest of the games down, just as the Blue and Green ones do. It gives you an extra set of games to sift through that you'd actually consider buying.