Color versus apparent magnitude plots of 2MASS sources (red dots) along with the much brighter BAaDE source (blue triangle) and our RGB fit (black straight line). All sources are within 4′ of the coordinates shown at the top of each panel. The RGB fit is used to derive the reddening and extinction (, shown at top of plot) as described in the text. This procedure was conducted for each source in the GC sample and these plots are shown as examples of a low-extinction field, and typical-extinction field, and a high-extinction field from top to bottom.