Oh, I'm really sorry, but I can't change anything here :X Because this stuff is handled by the PICO-8 it self. But yeah, I would love to see that in the further PICO-8 releases. Thanks for the tips ;)
Well, I don't know PICO-8 very much.
BTW, I wondered why many PICO-8 games look extraordinarily. Does it just happen so that people who are good artists make games in PICO-8 and know the language inside out, or it's just that easy to create eye-catching graphics?