Reproduction steps:

1. Open "MinimalReproProject"
2. Open the "Main" Scene
3. "Window" -> "Tile Palette"
4. Select "Wall Brush" instead of "Default brush" at the bottom of the "Tile Palette" window
5. Select "Brush Color" as "Black"
6. Press "B"
7. Paint over one Grid Box
8. Press "B"
9. Deselect the Grid
10. Select "Brush Color" as "White"
11. Click on the newly painted black Grid Object

Expected Result: The Grid object should just be selected
Actual Result: The Grid object changes color to what color you currently have selected

Reproduced with: 2017.3.0a1, 2017.2.0b4,
Did not reproduce on: 2017.1.0p1 (Feature was not yet implemented)