Apply the glow effect
GlowFilter
GlowFilter is a class that stores information about glow effects. Objects can be generated by specifying the value of each property in the constructor arguments, or they can be generated by default with no arguments, and only properties that need to be changed can be reassigned.
color
The color of glow color
alpha
The alpha transparency value for the color
blurX
The amount of horizontal blur
blurY
The amount of vertical blur
strength
The strength of the imprint or spread
quality
The number of times to perform the blur
inner
Specifies whether the glow is an inner glow or not
knockout
The amount of horizontal blur