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The color is based on the scale legend for the level of hashing (as a percent of global hashrate) in that country.
Russia does 16.417% (175 EH/s) of global hashrate:
https://data.hashrateindex.com/network-data/global-hashrate-heatmap
Dammit ... just after I vowed to move to a warmer climate ...
(though I think I made the same vow last March after a similar blizzard as well)
Let's say a mining cartel (or a single large miner ) were to privately mine BIP 110 (not releasing blocks) at whatever hashrate gives them greatest work (versus public BIP 110) along the entire time -- all just to grief BIP 110.
When this hypothetical mining endeavor eventually broadcasts their blocks, and bexome the public BIP 110 tip, what could and/or would the response be at that point in time?