Rachel Dolezal -- Here's Where I Got Shady

Rachel Dolezal says she got her skin tone from the sun, but we've learned it's probably more sprays than rays.

Our tanning sources tell us ... Rachel was a loyal customer at Palm Beach Tan in Spokane, Washington. We're told she was a fan of Mystic Tan ... a brand of spray tan.

We're told Rachel was a frequent customer.

Palm Beach Tan offers light, medium and dark shades. Our sources wouldn't tell us which Rachel chose, but a spray tan expert tells us Rachel's a medium girl.

The cost ... a reasonable $30 a dip. There are also packages of $60 a month for unlimited visits.

Obviously, it's not fool proof, but it will probably get you stopped in Beverly Hills.

Check out Rachel's tap dance around tanning during her NBC interview. Pretty damn funny.