Change record status: 
Project: 
Introduced in branch: 
8.9.x
Introduced in version: 
8.9.0-alpha1
Description: 

Data type returned in core/modules/color/color.module by color_valid_hexadecimal_string() function changed.

Before

color_valid_hexadecimal_string() returns 1 if the string to check is a valid hexadecimal CSS color string, 0 if it isn't or FALSE if an error occurred.

After

color_valid_hexadecimal_string() returns TRUE if the string to check is a valid hexadecimal CSS color string, or FALSE if it isn't.

Impacts: 
Module developers