Red means it's implicitly boosted by one upgrade. So you'll see for example the base substat as +10 speed, instead of +5 speed.

Just put it on Lazarius for a four set.  Faster, something like 50% more life (from stats), more damage getting through on a toon already with Helmsmasher, made up for losing lifesteal set by adding Immortal for two slots, get 1700 life every turn, and Laz is a turn manip god.  Also pulled 1st Kael tonight and 6* Coldheart, so I now have made up some of my earliest mistakes at start of game.  Pretty decent night, tbh.