There are 3 questions,i hope your attention and quickly reply,thank you.
1.According to your user guider ,we can change Header Back-Color,but when i want to diy Artists C01 Theme color in background,i can't find the color scheme for me to diy?Why?

2.If i have Artists C01 Theme color scheme for me to diy,your user guider refer to say it can only change Header Back-Color.Why i cann't diy color scheme like drupal default theme gardland.And the problem is:
drupal default theme gardland can diy "full" color scheme(it has 12 color scheme ,and can diy yourself color scheme),but it's diy block is little.And sometime Artists C01 Theme is opposite.

3.You see,it hard for our beginner to choose,we only can use,not for developing:( I want to you to add some fuctions to let the beginner to use gui to diy their theme.:Under gui,user can easily change theme font size,color,column width,style and other some basic fuction.(yes,not directly modify theme css and there's some function in Artists C01 Theme :).

Thanks for your attention.