Filters Twenty Fifteen custom-header support arguments. 

Parameters

Fifteen

( Twenty ) 1.0 . . .

$args

( array ) { An array of custom-header support arguments. . . .

$default_text_color

( string ) Default color of the header text. . . .

( int ) $width Width in pixels of the custom header image. Default 954. . . .

( int ) $height Height in pixels of the custom header image. Default 1300. . . .

$wp-head-callback

( string ) Callback function used to styles the header image and text displayed on the blog. } . . .