13. An apparatus comprising: a processing unit to: determine a brightness of an area of a digital image, the area being designated as an area upon which text is to be added to the digital image; select a color of the text based upon the determined brightness, add the text to the digital image; and add a semi-transparent mask layer to the digital image, wherein a colored portion of the semi-transparent mask layer follows an outline of individual characters of the text added to the digital image, the colored portion of the mask layer being selected based on the selected color of the text and an underlying brightness of the digital image, in which the brightness is a perceived brightness, the perceived brightness being determined using the following expression: 
 ((R*X)+(G*Y)+(B+*Z))/1000 in which R represents a red component value, G represents a green component value, and B represents a blue component value of an RGB spectrum, and X, Y, and Z represent weights applied to R, G, and B component values, respectively.
13. An apparatus comprising: a processing unit to: determine a brightness of an area of a digital image, the area being designated as an area upon which text is to be added to the digital image; select a color of the text based upon the determined brightness, add the text to the digital image; and add a semi-transparent mask layer to the digital image, wherein a colored portion of the semi-transparent mask layer follows an outline of individual characters of the text added to the digital image, the colored portion of the mask layer being selected based on the selected color of the text and an underlying brightness of the digital image, in which the brightness is a perceived brightness, the perceived brightness being determined using the following expression: 
 ((R*X)+(G*Y)+(B+*Z))/1000 in which R represents a red component value, G represents a green component value, and B represents a blue component value of an RGB spectrum, and X, Y, and Z represent weights applied to R, G, and B component values, respectively. 17. The apparatus of claim 13 , wherein the colored portion of the mask layer comprises at least two differently colored areas corresponding to different portions of the text being added.