mxflat theme can be found in sawfish-themes package in both ubuntu and debian.

I made a google chrome like color schema using this theme with settings below.

This is the sample image, the browser is swiftfox with chromifox theme.
sawfish-mxflat-chrome

Also you can make a shadow~
sawfish-mxflat-chrome-shadow

Here is the auto-generated configuration with sawfish-ui.

(custom-set-typed-variable (quote mxflat:fake-shadow) (quote ()) (quote boolean))
(custom-set-typed-variable (quote mxflat:shadow-width) (quote 4) (quote (number 0 100)))
(custom-set-typed-variable (quote mxflat:shadow-light-distance) (quote 3) (quote (number 1 100)))
(custom-set-typed-variable (quote default-frame-style) (quote mxflat) (quote frame-style))
(custom-set-typed-variable (quote mxflat:show-corners) (quote ()) (quote boolean))
(custom-set-typed-variable (quote mxflat:border-width-unmaximized) (quote 1) (quote (number 0 1000)))
(custom-set-typed-variable (quote mxflat:border-width-maximized) (quote 1) (quote (number 0 1000)))
(custom-set-typed-variable (quote mxflat:border-color-unfocused) (quote "#587f84dcba8b") (quote color))
(custom-set-typed-variable (quote mxflat:border-color-focused) (quote "#42427c7bc2c1") (quote color))
(custom-set-typed-variable (quote mxflat:border-offset) (quote 0) (quote (number -1000 1000)))
(custom-set-typed-variable (quote mxflat:titlebar-gradient-bgcolors) (quote ("#605fa09ff0ef" "#3ac276ebbf1a")) (quote (list color "titlebar background colors")))
(custom-set-typed-variable (quote mxflat:title-gradient) (quote t) (quote boolean))
(custom-set-typed-variable (quote mxflat:titlebar-bgcolor-unfocused) (quote "#605fa09ff0ef") (quote color))
(custom-set-typed-variable (quote mxflat:titlebar-bgcolor-focused) (quote "#49488f8fe3e2") (quote color))
(custom-set-typed-variable (quote mxflat:text-color-unfocused) (quote "#ffffffffffff") (quote color))
(custom-set-typed-variable (quote mxflat:customize-border-colors) (quote t) (quote boolean))
(custom-set-typed-variable (quote mxflat:text-color-focused) (quote "#ffffffffffff") (quote color))
(custom-set-typed-variable (quote mxflat:custom-border-focused) (quote ()) (quote boolean))
(custom-set-typed-variable (quote mxflat:keep-borders-when-shaded) (quote ()) (quote boolean))
(custom-set-typed-variable (quote mxflat:border-width-titlebar-contents) (quote 0) (quote (number 0 1000)))
(custom-set-typed-variable (quote mxflat:decoration-mode) (quote normal) (quote symbol))
(custom-set-typed-variable (quote mxflat:title-font) (quote ("Pango" . "Tahoma 8")) (quote font))
(custom-set-typed-variable (quote mxflat:title-height) (quote 14) (quote (number 9 1000)))
(custom-set-typed-variable (quote mxflat:color-brightness) (quote 90) (quote (number 0 100)))
(custom-set-typed-variable (quote mxflat:color-hue) (quote 0) (quote (number 0 360)))
(custom-set-typed-variable (quote mxflat:titlebar-gradient-bgcolors-reverse) (quote ()) (quote boolean))
(custom-set-typed-variable (quote mxflat:gradient-scale) (quote 3) (quote (number 1 20)))
(custom-set-typed-variable (quote mxflat:titlebar-gradient-color-mode) (quote custom) (quote symbol))
(custom-set-typed-variable (quote mxflat:customize-title-position) (quote ()) (quote boolean))
(custom-set-typed-variable (quote mxflat:custom-title) (quote ()) (quote boolean))
(custom-set-typed-variable (quote mxflat:customize-extended-text-colors) (quote ()) (quote boolean))
(custom-set-typed-variable (quote mxflat:gradient-direction) (quote vertical) (quote symbol))
(custom-set-typed-variable (quote mxflat:custom-button-colors) (quote ()) (quote boolean))
(custom-set-typed-variable (quote mxflat:fake-shadow-focused-only) (quote ()) (quote boolean))