With this library you can easily and accessibly set or get layer effects parameters by simply calling fx_set() or fx_get().
fx_set() works similarly to how fx_parameter_set() works but with the modification that you only need to enter the layer name.
You can pass as many arguments as needed for the parameter into this function also. such as:
fx_set("MyEffectsLayer", fx_color_tint, color_get_rgba_normalized(c_white, 1));
There are also a couple of extended color functions such as:
color_get_rgb(color_code)
color_get_rgba(color_code, alpha)
color_get_rgb_normalized(color_code)
color_get_rgba_normalized(color_code, alpha)
which will return an array containing the Red, Green, and Blue channels of a Game Maker color code. *_normalized will return the color codes to be a value between 0 and 1.