Maybe. I personally do like colors, but not sure if those would "sell." A phone is more personal, thus Apple can take risk to do colors (plus they do sell more iPhones). iPads already not as much seller as iPhones, so having a mass production facility to do an extra color might be too "costly" for Apple.
I am curious about the current share of iPad colors, between space gray, silver, gold, and rose gold, like how many each are actually sold percentage wise. Would be neat if Apple ever disclose that detail (no need for actual numbers, just percentage).
I wonder if it's like cars. The best sellers are still the "boring" silver or white.