Get the color that matches the closest and go over the grout with a toothbrush. 

Short of it is, we thing they sprayed and dodo something else to mask the order so they could sell.

You can change glass thickness, frame finish, frame color, etc.

If you have multiple rooms and are using the same paint color and go with a single coat there are some big savings.

If you just wanted to change the color, then you could have probably had someone reglaze the existing tile in black, just like they do with bathtubs.

A bright color?

Roof was coated, primed and painted aluminum color to restore the look of the metal roof.

Standard tricks for locating and/or masking did not help.  

She can code as well ;) Can't do the multiple colors with the LEDs in mind, but there will be other lighting in the main areas that we can mess around with, and start creating custom color lighting.

Use light colors to work with what you have!