Non-designer here - I've never been able to get gradients right (the ones on the buttons, headers, etc). Is there a comprehensive guide to crafting this look?
The basics: choose a color, lighten it 5-10% for the top, darken it 10% for bottom, add a little saturation to the darker color. Dark (but not black) text with a `0 1px 0 rgba(255,255,255,.75)` shadow.
I believe 'a science of design' to be an impossible and indeed misleading goal.
— Fred Brooks