With Filestar you get 24 different skills for working productively with Capture One Style (.costyle) files.
About .Costyle
Name
Capture One Style
Extension
.costyle
Format
Text
Category
Camera
Developer
Phase One
Description
A Capture One style is an image-adjustment preset for Phase One's Capture One raw converter. It stores the settings of Capture One's tools - exposure, tone, colour balance, curves and the colour editor - as plain XML.