Clarity on ability ratio colours
In the tooltip brought up when you hover over a stat next to the champion portrait, such as attack damage or magic resistance, under all the calculations have a footnote saying something like "Values in abilities that scale off this stat are coloured (insert name of colour here, which would also be coloured the same as its ratio colour) I'd give a better example if coloured text was supported on this forum.
Health and mana don't really need to be cleared up since the ratios are always stated in abilities that scale off them, and the dark blue for Nasus' Q can be figured out easily enough.