Here is a discussion of the astrological colors of various planets.

http://cura.free.fr/22plcome.html[1]

Mercury: variable, brown, or multicolored.

Venus: white, blue, or green.

Mars: red.

Jupiter: orange, blue, green, or blue-purple.

Saturn: grey, black, or black-brown.

Uranus: various or blue.

Neptune: mauve or purple.

Pluto: black.

Here is a discussion of the real colors of various planets, which are often confused by the use of false color images:

http://curious.astro.cornell.edu/about-us/58-our-solar-system/planets-and-dwarf-planets/planet-watching/249-what-color-is-each-planet-intermediate[2]

Mercury: grey.

Venus: pale yellow.

Earth: blue.

Mars: reddish brown.

Jupiter: Banded in orange and white.

Saturn: pale gold.

Uranus: pale blue.

Neptune: pale blue.

Pluto: light brown.

So naked eye observations since ancient times clearly established that Mars is reddish, and no astrologers assigned any other color to Mars.

And it is possible that ancient Babylonian astronomers and astrologers assigned the color orange to Jupiter because they could see that Jupiter looked orange-white to them.

But the other planets just appeared as whitish dots, and apparently astrologers felt free to assign whatever colors to them that fit with their theoretical framework about the pagan gods and mystical influences assigned to those planets.

Therefore, nobody seems to have known the colors of any planets except for Mars (and possibly Jupiter) until the beginning of telescopic observations in 1609. And nobody knew any other details about the appearances of the planets until the era of telescopic observations beginning in 1609 - and until the era of space probes beginning in the 1960s for some of the planets.

Here is a discussion of the astrological symbolical colors of various planets.

http://cura.free.fr/22plcome.html[1]

Mercury: variable, brown, or multicolored.

Venus: white, blue, or green.

Mars: red.

Jupiter: orange, blue, green, or blue-purple.

Saturn: grey, black, or black-brown.

Uranus: various or blue. (discovered in 1781)

Neptune: mauve or purple. (discovered in 1846)

Pluto: black. (counted as a planet 1930-2006)

Here is a discussion of the real colors of various planets, which are often confused by the use of false color images:

http://curious.astro.cornell.edu/about-us/58-our-solar-system/planets-and-dwarf-planets/planet-watching/249-what-color-is-each-planet-intermediate[2]

Mercury: grey.

Venus: pale yellow.

Earth: blue.

Mars: reddish brown.

Jupiter: Banded in orange and white.

Saturn: pale gold.

Uranus: pale blue.

Neptune: pale blue.

Pluto: light brown.

So naked eye observations since ancient times clearly established that Mars is reddish, and no astrologers assigned any other color to Mars.

And it is possible that ancient Babylonian astronomers and astrologers assigned the color orange to Jupiter because they could see that Jupiter looked orange-white to them.

But the other planets just appeared as whitish dots, and apparently astrologers felt free to assign whatever symbolic colors to them that fit with their theoretical framework about the pagan gods and mystical influences assigned to those planets.

Therefore, nobody seems to have known the colors of any planets except for Mars (and possibly Jupiter) until the beginning of telescopic observations in 1609. And nobody knew any other details about the appearances of the planets until the era of telescopic observations beginning in 1609 - and until the era of space probes beginning in the 1960s for some of the planets.