The problem with the colorizing method is that you have to keep choosing different opacity settings. The theory behind masks is that black is protected and white is filled in. Duplicate the tile and work from the duplicate. Flood fill this layer with white. Add a new layer.
Flood fill with a color then play with the opacity slider.
The colored tile on the left is not inverted, the tile on the right is inverted. If you don't like your color, just flood fill the masked layer again with a different color. With this method, you can make numerous background tiles of the same pattern in different colors. Masks Following are some texture tiles for you to use to create background tiles. On the left is the greyscale image of the tile and to its right is an example of that texture as a colorized tile.