I'd call it purple, but I guess that doesn't matter. The red icons do the same as blue icons, just that the blue icons have an increased value. For example, Ryen gets +200 HP while Trey gets +250 HP for each M.HP upgrade.
Hi Ryen thanks for the speedy reply, I appreciate it. You are correct of course about the colours, something I noticed when sending the screenshots. which I only sent later and was going from memory. Anyway thanks for the clarifications and help. Thanks for a top game.