tanned and dark is different leh. The pix look like shit skin or gorilla. Usual body builder is shiny tanned brown kind.
In the old days, bodybuilders just went out into the sun and got a tan by lying on the famed Venice Beach in California. Then came UV sun beds, which allowed them to tan indoors during the winter. Now, because of the link of UV exposure to skin cancer, many have switched to
sunless tanning products, which either colour the skin artificially or stimulate the skin's own melanin production. May be topical or oral.
If you're naturally dark like many Malay bodybuilders are, then getting a good tan isn't much of a problem. Some fair Chinese and Caucasians don't tan well – they get lobster-red in the sun.