To customize your WordPress website color, please read this tutorials.
Air supplies dozens of color options for website elements. There are a specific Colors tab in Theme Options interface. Please go to “Air Theme > Theme Options > Colors” tab:
The color options is theme-option-level what means they will affect all pages of this website. Eg if you change the page title color, the title on all pages use this color. But for a webpage created by BM content builder, it is possible to define different color for some elements.
The Auxiliary color is for the Audio player(audio format post), Link box(link format post), Tags cloud widget, Pre tag.
Plain text logo and Tagline
You could define two colors(dark/light) for logo and tagline.
Menu(Menu Item and Icon) on Header
You can define 2 sets of colors(dark/light) for the head menu.
You could define the expanded panel BG color, menu color.