Wine has notably a very ugly color skin.

Although it does indeed support windows skins, however such support is experimental and considered unstable.

However simply changing interface colors can improve the appearance dramatically, here’s how to:

gedit .wine/user.reg

and insert under string [Control Panel\\Colors] the following values, then save and restart the wine application.

“ActiveBorder”=”239 235 231″
“ActiveTitle”=”239 235 231″
“AppWorkSpace”=”198 198 191″
“Background”=”93 77 52″
“ButtonAlternativeFace”=”200 0 0″
“ButtonDkShadow”=”85 85 82″
“ButtonFace”=”239 235 231″
“ButtonHilight”=”255 255 255″
“ButtonLight”=”255 255 255″
“ButtonShadow”=”198 198 191″
“ButtonText”=”0 0 0″
“GradientActiveTitle”=”239 235 231″
“GradientInactiveTitle”=”239 235 231″
“GrayText”=”198 198 191″
“Hilight”=”246 200 129″
“HilightText”=”0 0 0″
“InactiveBorder”=”239 235 231″
“InactiveTitle”=”239 235 231″
“InactiveTitleText”=”255 255 255″
“InfoText”=”0 0 0″
“InfoWindow”=”255 255 166″
“Menu”=”239 235 231″
“MenuBar”=”239 235 231″ [Control Panel\\Colors]
“MenuHilight”=”246 200 129″
“MenuText”=”0 0 0″
“Scrollbar”=”239 235 231″
“TitleText”=”255 255 255″
“Window”=”255 255 255″
“WindowFrame”=”0 0 0″
“WindowText”=”0 0 0″