Yes, you can change the text in the textboxes through the “Edit content” section by yourself and if you need to change the font/size of the headings, please, follow the way Admin Panel-> Edit content->Double click on the Heading-> Show image settings-> Edit -> Select the options for the Heading-> Save changes

Please, note, if you save them as “Save current” the changes will be applied to all of the site headings respectively. If you click on “Create a new” preset, you will change the current heading only.You may always submit a ticket through the Admin panel and your webmaster will do it for you if you experience difficulties or do not want to mess up the look of the site.

To change the color or the font of the Company Name, please, follow the way
Admin Panel-> Edit content-> Double click on the Company name to get to the Editing frame

In the frame “Company name :: Edit element” select “Show image settings”-> Image preset-> Edit-> Change the Parameters-> Submit

You will be asked if you want to create a new preset or to save the current one. Please, save the current one and it will apply on the company Name infobox only.