Penumbra - colour scheme
Penumbra is a mathematically balanced colour scheme constructed in a perceptually uniform colour space with base colours inspired by the shades of colour occurring in nature due to the light of the sun and the sky. It cleanly separates the perceptual properties of colours while optimally utilizing the available colour space of typical displays.
The Pitfalls of Boolean Trap
Good little article about the pitfalls of using boolean values as parameters for a function. Not the first time I've seen this sort of thing (I'm sure I read a similar article years before, and a similar thing in a coding book even earlier).
Still good advice.
At least it's a little better in languages with keyword arguments.