Fixed a bug that prevented form color settings from being reflected

【Details of the fix】
■Fixed a bug in which the background color of form headings was not reflected (IE only).
■Fixed the bug that the background color of the main form is not reflected (all browsers).

The following are the files that have been modified for this update.
【Corrected files】
plugins/tcd-workflow/design-plus-contact-form.php
Plugins/tcd-workflow/form.php
plugins/tcd-workflow/readme.txt

For more details, please refer to the download site for purchasers of AGENT (tcd033).