Is there anything where someone has taken the effort to measure quantitatively how contrasting the colours are now compared to how they were before? It feels to

Is there anything where someone has taken the effort to measure quantitatively how contrasting the colours are now compared to how they were before? It feels to me like people will be biased towards what they are used to, regardless of which is better. I don’t have good pictures of the maps before but just comparing to Apple Maps by eye: - at high zooms, AM public transport has lower contrast between roads and the rest than GM which is lower contrast than other AM views - zoomed out a bit and the contrast is similar. AM shows fewer small streets but more main streets are shown thicker than in GM. AM shows more of certain POIs like stations or landmarks - zoomed out a bit more and GM shows major roads with higher contrast than AM which doesn’t pick them out so much but shows side streets with hairlines. The green is greener in AM. - public transport view at this level is so much better in AM. It’s less cluttered (lines are thinner, when trains run along the same route the lines are rendered right next to each other where GM has an ugly amount of space. Both views are omitting useful information at this zoom level (eg stations and interchanges aren’t all marked; it’s reasonable not to name them but AM used to be better I think). AM does a better job of mimicking signage/designs you see on the network (eg if the letter for a line is a coloured circle on a certain background) - zoomed out a lot and it’s a bit hard for me to describe the difference. AM seems to have a bit more contrast of roads against backgrounds. Roads are grey in both (I vaguely recall AM used to mimic road atlases). AM shows a greater variation of road thicknesses/darkness for more major roads. AM labels roads closer to how they appear on road signs and shows more road labels in ‘driving’ view - zooming out further and major roads fade to thin blue lines in AM and grey-blue on grey-green in GM. There is more variation in roughness (different terrain) for the green parts in AM.