About you first question, It’s already working as you want.The logo links to the home page. and If you want it to link to a specific page you can use the header builder and use an ad block and add a link to the logo image you will put ; it will works fine with you.
About your Second question,I checked your website . and found that this line is an image you used it as shown here http://s32.postimg.org/9zxbgk62d/Untitled.png
So you need to change the image itself to change the color .
PLease don’t hesitate to contact me for any other help.
Have a good day 🙂