Theme affecting Canvas
The background color from my Theme (UI color scheme), for which I prefer black, is inherited by canvas, which had defaulted to white. So now I have to do everything in inverted video (by triple/tapping my iPhone's home button)! Is this a bug? Must drawing start by explicitly filling the canvas with white?
Note to self (and others so afflicted)—
Starting with this seemed to fix it:
where i've done this at global scope:
scrSize=(1136,640) # iPhone 5
set_size(*scrSize) # min 16, max 2048
(my canvas is meant for landscape viewing)