Considering Google guidelines you should not practice hidden text on your site. Hidden text means having the same background color as the text color on the site. Making text invisible for the common user but readable by the crawlers. This is totally considered as spam technique and against the Google guidelines applicable for hidden text penalty. Generally webmasters apply this method to increase their keyword density, thinking that it will help to rank higher on the search engines. But overall impact of hidden text is very much devastating.

•    You loose your organic rankings.
•    It takes around 2-3 months to get back if you have applied ethical practice removing the spam.

Think how much business and loss you will have to bear. Practicing hidden text can be beneficial in for short term. But for serving long term practice you have to apply ethical and clean techniques to rank higher. If you really don’t want to be involved in hidden text penalty, never use these practices on your site.

Think before you link to hidden text. This is luring opportunity to rank higher on search engines targeting hidden text but never beneficial and can blacklist your site. So don’t get involved in hidden text penalty. Be clean and clear and always try ethical practices on your site.