Quick Diagnosis

[lalstalls]

I don't weight my guesses too heavily, but I present them for criticism: The red/purple might suggest a phosphorus deficiency, the white between veins a zinc deficiency. But it's rained while I was away; might there be an over-watering factor?

Symptoms over the last two days:

Yesterday, the new growth on this plant of mystery-seed origin looked like this:

Today, there's purple showing up:

Here's a view of larger fan leaves (yesterday), also showing trouble:


Thanks for any help!