That's your fault for not making it a color you can easily keep track of.
Yes and no. Some colours are a little insane to have for visibility, but you have multiple different coloured biomes. So, when most go for green because 'most visible colour', it turns out not to be while in the jungle and purity biomes. And I don't think the player should be expected to change cursor colour every five minutes.
Why the game hasn't incorporated an outlined cursor in the in-game settings is beyond me.