When purchasing the Applay Application theme for wordpress it is recommended to install Visual Composer.
It looks simple enough attempting to create custom CSS, however any attempts to save the use design options
Gives an error:
Design options could not be saved. Error: error evaluating function
darken
:a.toHSL not a function.
Which essentially means there is an element that cannot have no color value, that is attempted to being darkened.
I searched the theme, thinking I’d done something creating a child theme, reverted it back to the parent theme and could not solve it.
Both reports of this on the support page were:
Hi, we havenât received such complains before â please open support ticket at support.wpbakery.com and share your site credentials so our support team can help you out.
It turns out the error is due to the apptheme’s author’s own inbuilt theme customisation and a lack of compatibility with Visual Composer.
I received this email repsonse from the support for Visual Composer.
I decided to post this, as it may help others searching for this.