all three are silver since that was the only tone offered until recently.
the MBA 2010 is still unique and very beautiful while the MBP 2012 seems boxy, bulky and dull on the outside but looks incredible while open with the black lower bezel contacting with the silver speaker area looks sharp
(were the MacBook Pro is printed)!
while the MBA 2020 M1 might be the last Macbook with any contours or curves,
which is think is alluring the overall experience.
my iPad gen 10 and iPhone 12 mini are blue but square
and does not have that allure as the iPod touch gen 4 or iPad gen 5 2017 which are silver.
hoped this helped!