Many of the celestial bodies in our solar system have well-established color schemes, at least in the minds of the public. Mars is pale-red and black, Venus (beneath the clouds) is generally shown in rich yellows and oranges, the Moon ranges from dark to light gray, etc.
And, of course, Earth is famously blue and green. However, this is entirely because of the presence of large oceans and life. We're not seeing Earth's geology represented in these colors, as we are with the other planets, we're seeing overlaid colors from other processes that don't apply to Mars, Venus, or the Moon.
So I'm wondering, if you stripped away life and the oceans, what color(s) would Earth be? Based on types of rock, etc. Would the seabed be a different color from the continents? Would it be more uniform, or would it vary in color quite a bit from region to region? Would it be a similar gray to the Moon, or would other chemical processes (like the rusting of Mars) give it a more unique palette?