Why is the color scheme displayed different from the example in Settings?

Hi everyone and Jetbrains team,

I have a problem with the color theme in my CLion. On the left of the following picture is my default color scheme, which is, as you see, so uninteresting and way to simplistic (mostly blue and black). Whilst for the one on the right is what I see from the Settings -> Editor -> Color Scheme -> C/C++ (Default). As you can see, it looks a lot nicer in every way. All the keywords have appropriate coloring. How can I achieve the same? Thank you very much.

Please help me. I urgently need a nice color for my documentation and the one on the left is just too lame (just my personal opinion). I want a light theme, not dark, exactly like the one on the right. Thank you.