Newegg offers the Rosewill Illuminated Mechanical Gaming Keyboard in Brown, model no. RGB80, for $79.99 with free shipping. That's $10 under our June mention and the lowest price we've seen. (It's also a current price low by $25.) It features 100% mechanical key switches, six backlight modes, and 228 backlight color choices (although future software updates will bump that up to 16.8 million colors).
Note: If you haven't yet, use Newegg’s Android app and pay using Google Wallet to cut it to $64.99. (This discount can only be used once per account.)